Point of sale software jobs

I am looking to embark on a project that requires expertise in telecommunications, specifically in designing point to point communication systems like simplex, duplex, using radio as the communication type. To see this project to its fruition, I will need a professional who can design a communication link with various parameters. Thereafter, we'll need to carry out Link-level modeling and simulations in Matlab. The ideal candidate should: - Have a solid understanding of point to point communication systems, specifically both simplex and duplex systems. - Be proficient in using MATLAB for simulations. Following the simulation, we'll analyze the performance of our designed system using several metrics. For the simplex system, we would b...

I need an expert to help me select the most suitable all in 1 programming lan...we can make mobile apps in JS using react & angular. But in javascript will code be exactly same for all platforms ? 4. Another option is Flutter (Dart). 5. Which is better out of these 2 ? or can you suggest any other option apart of these 2 6. As of now I want to develop a web app for visual DBMS quite similar to ms access. It will look like a spreadsheet but will have capabilities of both Google sheets / MS excel & a DBMS (DataBase Management System) 7. I am very familiar with C & C++. So I would prefer to use similar syntax. 8. Can C++ be answer to my 1 & 2 point ? You should have: - Profound understanding of various programming languages - Sig...

...for industry professionals who are beginners in the field. The course intends to offer a comprehensive exploration of critical topics including: - Public-key cryptography - Symmetric-key cryptography - Cryptanalysis You Can Check the website at "" , the course costs "1388.33$" , use Discount Code "FREELANCERMARK13" while marketing for 5% off , each sale you successfully land you will receive 100$ after providing me with the screenshot from the email that the customer receive after paying Ideal candidates for this marketing project should have: - Knowledge of the professional marketplace - Experience advertising educational initiatives - Familiarity with the field of cryptography Your role will involve strategy development an...

I'm in need of a software developer to create a comprehensive solution for organizing and managing computer-based tests. Key Features Needed: - User Registration and Login: The software should allow for the creation and management of user accounts. - Question Bank Management: It needs to support the management of a database of test questions. - Test Scheduling and Timer: The software should also provide scheduling for tests and a timer feature for exam sessions. - Setting of Question Paper: The system should have a feature to set up question papers for each test. - Intuitive GUI for Examinee: A user-friendly graphical interface for test takers. - GUI for Result Preparation: Additionally, a graphical interface for staff to prepar...

I need an experienced web designer to create a professional and corporate landing page for my business. I do not require integration with any CRM or email marketing services at this point. Key Requirements: - Design a visually appealing, modern, and clean lead generation page - Ensure the page is user-friendly and optimized for conversions - Implement responsive design to ensure the page looks great on all devices Your skills and experience in creating user-friendly, modern, and clean landing pages will be essential. Please share your portfolio showcasing similar work.

I'm seeking an expert writer, experienced in conceiving compelling, persuasive pitches targeted specifically at those investing in startups. This pitch will be instrumental in raising capital for my UK based Pre-seed stage Software Startup. The unique strength of my startup is its team, which is highly experienced in delivering cutting-edge software solutions. Key Requirements: - You should be adept in conveying our team's unique experience and potential for delivering innovative software solutions. - Prior experience in writing fundraising pitches for software technology startups, especially at a Pre-seed stage in the UK market is crucial. - A proven track record in successfully raising funds through written pitches. I'm excited to wor...

...queueing model that replicates a week of collecting and processing DNA samples. a. First develop a flow diagram of how the process works, from the reporting of a crime, to the eventual match/no match on the DNA database. b. Identify any conditional aspects of the process, for example if there are any stages of the process where resources only become available once the previous sample has been processed. c. Second, write out the relevant equations associated with each step of the process, and construct a formula for the overall time in system. d. Use relevant notation and write out equations using Equation Editor in Word. e. Note – the rule of thumb is that any reader can pick up your report and replicate your results by following th...

I'...the AI should also be capable of scanning texts that users input and turn them into a document. The app needs to be monolingual and doesn't require support for multiple languages. The app will let users upload revision notes with a point system and have a dashboard of how long they've spent doing it. I want to eventually make it into an app which teachers, parents and students can use to check their childs activity and help others. i want a spot for brands to post student discounts and eventually earn commision off it the app sould also have a pro subscripion which has access to the good features. Ideal candidate should have: - Expertise in mobile app development - Experience with AI integration - Knowledge in video reel handling - Good under...

I'm in search of a skilled professional to handle 360 video rendering of a few specific diamond shapes. Your task involves emphasizing the shape and brilliance of the diamond to achieve a shiny and clear effect. The video is currently in MOV format, which is your starting point. I attach example video of a normal diamond 360. Your task is to: 1. To receive a sketch of the Diamond from me. 2. Make a 3D render of the diamond 3. Create video just like the examples with shiny effects 4. Offer both Black & white background 5. Must look like real life video of a diamond and not clearly a fake render To make this project a success, possessing high-level skills in video editing software, such as Adobe Premiere Pro or Afte...

I need a proficient Linux developer with a solid understanding of networking and security, and expertise in scripting languages like Bash or Python. The primary task will be troubleshooting and optimizing existing Linux systems. Also, superior skills in server administration and deployment are a requisite for this role. As the project unfolds, communication is critical, but I haven't decided on a reporting frequency at this point. Please provide suggestions on what you've found effective in your experience.

I'm in need of an expert in Python, HTML and JavaScript programming. I am working on a project that involves developing a software tool. Key tasks involve: - Python programming - HTML development - JavaScript programming The main goal is to develop a high-functioning software tool. The ideal candidate should have expert level experience in all three programming languages. Your proven track record and portfolio of similar projects will help you stand out. This meticulously demanding job needs the best of the best. I am counting on your commitment to detail and your cutting-edge proficiency to produce a highly reliable software tool.

I'm looking for a ready made software with complete code base Key Features: - The software should offer a user-friendly interface to handle user management efficiently. Who should bid: - Freelancers who have prior experience in creating user management systems. - Proficiency in developing software compatible with Windows and MacOS. - Understanding of the unique needs of business users. Your bid should give me confidence in your understanding and ability to deliver on these requirements. Let's create a tool that simplifies user management for businesses across these key OS platforms!

...for industry professionals who are beginners in the field. The course intends to offer a comprehensive exploration of critical topics including: - Public-key cryptography - Symmetric-key cryptography - Cryptanalysis You Can Check the website at "" , the course costs "1388.33$" , use Discount Code "FREELANCERMARK13" while marketing for 5% off , each sale you successfully land you will receive 100$ after providing me with the screenshot from the email that the customer receive after paying Ideal candidates for this marketing project should have: - Knowledge of the professional marketplace - Experience advertising educational initiatives - Familiarity with the field of cryptography Your role will involve strategy development an...

I'm looking for an experienced business planner to help create a detailed business strategy for my upcoming baby milk infant formula brand in Saudi Arabia. I'm targeting a wide range of age groups, from newborns to toddlers, including specialty formula. Key Elements: - **Market Analysis**: This should outline the current market situation in Saudi Arabia, including competitors, market size, and trends. - **Financial Projections**: The business plan should include detailed financial projections over the next 3 years. This will be crucial for securing investments and planning our growth. - **Marketing Strategy**: I need a comprehensive marketing plan that will help us effectively reach our target audience in Saudi Arabia. - **Pricing Structure Strategy**: Your expertise in d...

I'm in search of a skilled presentation designer who can help me create a visually appealing and impactful presentation to showcase my career accomplishments. I already have all the essential data ready, and I'm looking to convey the following: - My professional journey, including accomplishments, lessons learned, and personal development. - Specific results from my work, both before and after certain milestones. Here are some key details you should consider: - The presentation should be concise and to the point, with the goal of promoting my career. - I aim to use this presentation for both personal promotion and interview purposes. The ideal freelancer for this job should be proficient in: - Crafting engaging presentations, with a good understanding ...

...for industry professionals who are beginners in the field. The course intends to offer a comprehensive exploration of critical topics including: - Public-key cryptography - Symmetric-key cryptography - Cryptanalysis You Can Check the website at "" , the course costs "1388.33$" , use Discount Code "FREELANCERMARK13" while marketing for 5% off , each sale you successfully land you will receive 100$ after providing me with the screenshot from the email that the customer receive after paying Ideal candidates for this marketing project should have: - Knowledge of the professional marketplace - Experience advertising educational initiatives - Familiarity with the field of cryptography Your role will involve strategy development an...

I need a WordPress plugin that can handle shipping details seamlessly - ensuring timely order processing and customer updates. Key Requirements: - Mark Orders as Ready: The plugin should allow for both automatic and manual marking of orders as ready in Sequell after being placed in WordPress. This is crucial to ensure the system is user-friendly and flexible. - Generate Tracking IDs: The plugin must be able to create tracking IDs for the shipping orders. This feature is essential for order tracking and to provide customers with accurate shipping details. - Customer Updates: I prefer that the plugin notifies customers via email and with in-site notifications on WordPress. This will help ensure customers are updated on their order status in real-time. Ideal Freelancer: It's im...

...Cryptography course. This initiative is designed for industry professionals who are beginners in the field. The course intends to offer a comprehensive exploration of critical topics including: - Public-key cryptography - Symmetric-key cryptography - Cryptanalysis You Can Check the website at "" , the course costs "1388.33$" , use Discount Code "FREELANCERMARK13" while marketing for 5% off , each sale you successfully land you will receive 100$ Ideal candidates for this marketing project should have: - Knowledge of the professional marketplace - Experience advertising educational initiatives - Familiarity with the field of cryptography Your role will involve strategy development and implementing engaging marketing campaigns ...

...specifically for a time-sensitive special offer. The goal is to attract and entice an audience within the age bracket of 35-49 and 50+. Key Responsibilities: - Develop and execute YouTube marketing strategies - Improve visibility and click-through rates - Generate website traffic Ideal Freelancer: - Proven experience in YouTube marketing - Understanding of SEO for video rankings - Ability to target and engage the specific age demographic 35-49 and 50+ - Experience in driving website traffic and promoting product sales. Your role is critical in promoting my website, which primarily serves to sell products and services. YouTube campaign to solicit potential developer/buyers of Lifestyle Blocks in St David Springs Arizona. The market area to solic...

I'm looking for a proficient developer to create a software to be embedded within my existing Laravel website. While I haven't defined an exact functionality, the software's main purpose will be question bank , create mobile app as well

Create Gaming Dating Mobile App (Ex.- Hello Yo & Ludo Play Room etc.)

I am in need of proficient sales individuals or teams who can handle the task of selling airtime to national corporations for my television channel. As such, an understanding of the television advertisement field, as well as a proven track record in sales to corporations at the national level, is essential. Below are the specifics of this project: • Sale of TV Airtime: The main task is facilitating the sale of broadcasting airtime to national corporations for advertising purposes. You should have strong negotiation skills and an in-depth understanding of TV marketing. • Campaign Duration: This project is expected to run for a medium-term period between 4 to 6 months. A regular report on sales progress will be req...

I'm in need of a seasoned developer with experience in Hubspot software development. The project will entail incorporating key features such as contact management, email marketing and lead generation into the Hubspot platform. Key requirements of the project include: - Integration of contact management feature to accurately store information. - Utilize the email marketing feature effectively for targeted campaigns. - Ensure the lead generation feature is robust and functional. In addition, the software should be compatible with key platforms and integrations like Salesforce, WordPress, and Shopify. Ideal candidates should have: - A profound understanding of Hubspot software. - Demonstrable experience in developing similar features. ...

My system has been compromised by hackers who have networked my devices through Azure. They are using my cameras and microphones to stream me and my family to the internet, and stealing information. As a result, I have no control over my devices at this point. I am seeking an experienced professional who can assist me in removing the hackers from my systems and ensuring that my personal data is secured. Your primary focus must be on removing these hackers from the system. Key tasks include: - Investigating the extent of the hack and identifying vulnerabilities - Removing the hackers from the system entirely - Securing my personal data - Ensuring control over cameras and microphones is restored Ideal Skills and Experience: - Proven experience in cybersecurity and network ...

I am looking for assistance in creating a visually engaging, professional PowerPoint presentation, using a provided style template, based on a 64 double side page Word document. Key details: - Extract key points and messages to form a summarized version of the Word document's content. - Encompass a range of 50 to 80 slides with a balance between text and relevant images to ensure readability and viewer engagement. - Align with pre-existing PowerPoint template aesthetic. Ideal candidate should have: - Excellent summarization skills and attention to detail. - Proficiency in PowerPoint. - Experience in creating engaging corporate presentations. Presentation would need to be done in 5 days

1) Implement MOSSE with SCRFD for Java Android 2) Implement it in our app by replacing MLKit and connect it to our engine 3) Replace our engine with ARCface The App must be fast and robust....the C++ libs. Create a demo app that runs detection and tracking and: 1. shows boxes and tracking ID for each face detected. 2. model size 3. fps 4. face confidence 5. screen resolution 6. Allow the app to run on Android's both front and back camera 7. add a zoom feature if supported by the device's camera. 8. add an option to upload and process recorded videos. no need to do ui/ux design key point is to integrate c++ library with android app Need to do some test before start Check SCRFD android repo on github, and build and run it first And then let me know

I'm in need of a software programmer who is proficient in Python, Java, and C++ to develop a small-scale software program primarily aimed at automating a specific task. The task itself is relatively simple, but the automation of it is critical to increase efficiency. Key aspects of the project: - The software program must be designed to automate a specific task. It's crucial that the programmer fully understands the task at hand to ensure a seamless integration of automation. - The scope of the project is small-scale, so the focus is on developing a functional, efficient automation solution. - Proficiency in Python, Java, and C++ is non-negotiable. The software is expected to be developed using these languages. Id...

I am looking for an experienced...its unique problem-solving capability. Expectations are: - Exceptional writing skills to convey our message in a concise yet captivating way. - Ability to tailor content specifically targeting industry professionals. - In-depth understanding of our product's problem-solving capability and translating it into an engaging narrative. - Experience in distributing press releases is preferable. Your knowledge in technical or industrial products is a significant plus. This project will require a deep understanding of the product and its unique selling point – its problem-solving capability. Would especially appreciate bids from freelancers with a background in writing about such tools and technology. also need assistance with ...

I'm in need of a skilled software engineer to work on a swim software project. This project involves integrating the new swim software with an existing software A. Here are some key aspects of the project: - Registration System: The new swim software should include a comprehensive registration system with the following functionalities: - User Account Creation: Users should be able to easily create a new account on the platform. - Event Sign-up: An easy-to-use system for users to sign up for various events. - Membership Renewal: A feature to facilitate the renewal of membership for users. - Load Times: I need the system to have quick load times for a smooth user experience. - Additional Options: I'm also looking to ...

I'm looking for a proficient programmer or web developer with experience in creating Chrome extensions for social media platforms. The main requirement is to generate tailored content for Instagram. - You should create a Chrome extension with the following features: - Template-based content generation: It should suppo...overlay different texts over one video. - Text overlays: This feature is to add text over images or videos. - Mass production/download: This tool should generate content in bulk and allow for mass downloads. The ideal candidate for this project would have a strong command over JavaScript (for Chrome extension development) and experience dealing with various social media APIs. A strong understanding of content creation processes for social media will also b...

...category and 3 subcategories will be able to add or change categories, subcategories, and products by Excel or JSON in CMD 2- brands > their products 3- offers > list of offers > their products There are offers page when you choose one of the offers you'll go to the list of their products 4- BestSellers 5- Rewards Point... 6- all in the target website we need it even though I don't list it here -when you go to every single page form above, will find a filter on the left side for categories and pin which category we are on, and other filters(Brands, Ratings, Price, type of offers, Gender, Life Stage, and more) -there is a list of classifications we will provide, and every single product can take one or more classifications (l...

I'm in need of someone adept at PHP and SOAP. My development site is currently returning a warning message: "Attempt to read property "Invoice_Number" on string." I've set up a dev SOAP server for you to carry out the work. At this point, I'm uncertain if I'm attempting to access the "Invoice_Number" property on a string. There are also no other error messages accompanying this issue. Key tasks: - Identify the cause of the "Invoice_Number" warning - Fix the PHP SOAP warning Ideal skills: - Proficiency in PHP - Experience dealing with SOAP - Ability to troubleshoot and resolve such issues promptly

As the name suggests, i am looking for somebody who could potentially make me some software that can scan the DVSA government website automatically and be able to find me any test cancellation dates. However, this wouldn't be on the public dvsa website, but for the driving instructor portal (only accessible with a valid government gateway ID [which i will provide]). Further details will be ironed out.

We are seeking an experienced software developer to join our team and work on developing a secure and scalable VPN/Internet gateway solution. This project involves building server software capable of authenticating client connections and providing access to the internet. Requirements: Master's degree or PhD in Computer Science, Cybersecurity, or a related field Extensive experience in internet security, privacy, and VPN technologies Strong proficiency in server-side software development Familiarity with OpenWrt and router firmware development (preferred) Passion for internet security and privacy Responsibilities: Develop robust Wireguard exit nodes and VPN server software Ensure seamless integration with existing client software and VPN rou...

I'm looking for a skilled software developer who can create a custom, user-friendly test taking software for my extensive question bank. Key Features: - The software should support multiple choice questions only. - I need the software to have the flexibility to set both strict and flexible time limits for each test. - The results should be displayed in a detailed breakdown by question. Ideal Skills and Experience: - Proficient in software development, specifically in creating educational software. - Experience with creating user-friendly interfaces and interactive features. - Strong understanding of database management to handle a large question bank. - Familiarity with constructing detailed result summaries based on user performa...

...strategist who can help me make sense of some critical elements. I need assistance in determining a sound pricing strategy, setting appropriate initial prices, and conducting a thorough analysis of competitors' prices. Additionally, I'm at a point in my business where I haven't yet defined my customer segments. Key services required include: • Formulating a pricing strategy for my digital services. • Setting the initial pricing for these services. • Analyzing and making recommendations based on competitors' prices. • Guidance on customer segment definition for optimal pricing. I currently make use of various pricing methods including cost-plus, value-based, and competitor-based pricing. Therefore, I need a professio...

I'm in immediate need of a cloud-based stock management software with barcode generation, scanning, stock quantity tracking, and weight measurement functions. The system should enable me to: - Generate and scan barcodes for every product in my stock - Track the quantity of each item I have in stock - Measure the weight of my stock in grams I prefer a cloud-based solution that can be accessed and updated from any internet-connected device. The software should have an easy to use interface and be able to: - Enable manual entry of stock data - Support updating stock information by scanning barcodes - Automatically update stock data from my sales records The software could be developed in Excel, as long as it's accessible online. A...

...developer to create a comprehensive, easy-to-use ERP software tailored to the gold and diamond jewellery industry. This system will be integrated with e-commerce and feature several additional modules. Key features required: - Inventory Management: The system should efficiently track our jewellery stock levels. - Sales Tracking: Real-time data on our sales performance. - Customer Management: To maintain a customer database. - Credit Management: Tracking outstanding credit and sending payment reminders. - Finance Management: Tracking income and generating financial reports. - CRM: To maintain good relationships with our customers. - E-commerce Integration: Development of a functional e-commerce website and application. - POS: A point of sale system for...

I'm looking for a skilled web designer to create a visually appealing website that reflects the aesthetic of the fashion designers who will be showcasing their work. The website's primary goal is to sell fashion products online, so it needs to be both visually engaging and highly functional. Key Features: - Designer Profiles: Each designer showcasing their work needs a dedicated profile page that reflects their unique style. - High-Resolution Image Galleries: The website should feature high-quality images of the fashion products for sale, as well as from past collections. - Upcoming Fashion Event Calendar: We will be hosting various fashion events and showcases, so an event calendar is essential. The website should be user-friendly with easy navigation, an...

...from the point where the last row of data was successfully extracted. Scraper Functions Function: list_category_tree Input: competitor_name(astro | sayurbox | segari), existing_csv (optional - CSV file to append to for continuing execution, if the scraper stopped or got IP blocked) Output: CSV of category tree with the following columns (scrape_date, URL, category name, position index, parent_category (null if top level)) Function: extract_sku Input: competitor_name, location (autocomplete place from google maps API), category (optional - extract SKUs from all categories if null), sub_category (optional - extract all SKUs from all subcategories if null), existing_csv (optional - CSV file to append to for continuing execution, if the scraper stopped or got IP bl...

I'm in need of a versatile and comprehensive ERP system specifically tailored for a jewellery store. This system will need to be compatible with both Windows and Mac operating systems. Key Features: - Inventory Management: A robust tool to manage my stock of jewellery items, including tracking and updating inventory levels in real-time. - Sales and Order Management: A seamless system to handle the processing of orders and managing sales records effortlessly. - Customer Relationship Management (CRM): A centralized platform to store and manage customer information, with a focus on providing personalized and exceptional customer service. - POS & Credit Management: An integrated point of sale system that also incorporates credit management fu...

...include a detailed analysis of our market and its trends, as well as our product features and benefits. Key requirements include: - More than 20 slides - Incorporating Product Features and Benefits, Market Analysis and Trends, Company achievements and goals, and Financial Information. Skills needed: - Proficiency with PowerPoint and creating data-rich, visually appealing presentations - A solid understanding of market analysis and financial data - Excellent communication skills to translate complex information into simple, engaging slides This is a high-stakes presentation for our company, and it's essential that it's both informative and persuasive. You could use an existing template to work from as a base. I would provide the content and the power poin...

...to an existing trading bot, designed to interact with the Robinhood app. Key Requirements: - The bot should operate based on user conditions primarily, with a minor reliance on its built-in algorithm. - After identifying a high point, the bot should immediately sell. - Conversely, after determining a low point, the bot should buy. - The bot needs to establish these high and low points based on a combination of news, average, and RSI factors. Ideal skills and experience: - Proficiency in the programming language/s used by the existing bot - Deep understanding of stock market functionalities - Proven experience in financial algorithm development - Familiarity with Robinhood app integration - Strong analytical skills to map out and incorporate user-set condit...

I'm looking for an experienced C++ developer to help me in developing new features for a desktop application. The application should be compatible with Windows OS. Key Responsibilities: - Develop new features for the existing desktop application - Write high-quality, efficient, and maintainable C++ code - Ensure the new features seamlessly integrate with the current application Ideal Skills and Experience: - Proficient in C++ programming language - Previous experience in developing desktop applications - Familiarity with Windows OS - Strong problem-solving and debugging skills - Ability to write efficient and clean code If you're a C++ developer with a keen eye for detail and a passion for creating top-notch desktop applications, I'd love to hear from you.

Topic: Unveiling the Future of Nuclear Energy: Resource Availability, Technological Advancement, and Safety Perspectives. Format: Journal Article Double line spacing, and 10-12 point font. With sections of Introduction, Methods/Data, Results and Discussion, Conclusions/Remarks). Citations and Turn-it-in report are also required.

...can assist me in valuing my cross-border money transfer company. The primary purpose of this valuation is to prepare my company for a potential sale. Key Project Details: - Industry: My company operates in the cross-border money transfer sector. Experience in this or a related industry is desirable. - Valuation Methods: While I don't have a specific valuation model in mind, it's important that the chosen method is relevant and accurate for a business like mine. Experience in valuing tech companies or financial services businesses would be a plus. Ideal Skills and Experience: - Demonstrable experience in business valuation, ideally with a focus on technology or financial services. - Strong understanding of the cross-border money transfer industry. - Abil...

Productbrochure / Productcatalog Hello, we have technical Prod...search a solution for 2 Catalogs. First Catalog with small products and easy products with photos, details, part number, price for automatic publishing via a Excel File and the second Version is a Catalog which i must make with a software manuell/self, because very strong products, which are not possible to create via excel, only a catalog as information and .... have you a easy and good solution for us, that we can change weekly the products because we add every week 10-50 new products in our excel / erp / website and in the brochure than. But we need a easy software which we can edit self very easy, but with high quality design and for printing as PDF and for Printing with Printer in high quality. All wit...

More details: What platforms do you want the app to be developed for? Android, Both Will the app require user authentication? Not sure Which functionalities do you want for your web portal? User management, Real-time updates

I'm looking for a skilled developer who can help me fortify my C# WPF software. The main focus is preventing unauthorized access through a robust license key validation system. The ideal system will be capable of supporting both time-limited access (subscriptions) and permanent licenses. The successful freelancer should have: - Strong proficiency in C# and WPF - Proven experience in developing software protection systems - Expertise in implementing license key validation systems - Familiarity with both time-limited and permanent license structures - A good understanding of software security best practices Your role will involve: - Designing and implementing a license key validation system - Ensuring the system can handle both time-limited and perma...

I am offering source codes for 26 unique Android games ready for purchase. Having developed these games, I can guarantee their quality and potential. Potential buyers, such as a budding game developer or a gaming company, would find this extremely beneficial. Ideal Skills and Experience: * Familiarity with Android Game Development * Profit-oriented mindset * Interest in code acquisition * Game re-skinning capabilities would be a plus Since I missed out on detailing game categories and project timeline, I'm open to discuss these and more at the prospective buyer's convenience.