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I need an experienced developer to implement NFC payment functionality on LineageOS. The solution should enable contactless payments and allow me to store payment Details, make directly transactions via my Device Urovo HT66 and manage payment methods. Requirements: - Support across smartphones, tablets, wearables, and cards - No authentication needed (e.g., PIN, biometrics) because contactless pay via nfc Ideal Skills and Experience: - Expertise in NFC technology and payment systems - Experience with LineageOS or similar custom ROMs - Strong background in mobile application development - Familiarity with security standards in payment processing Please provide relevant work experience in your bids.
Project ID: 40709249
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Active 2 days ago
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144 freelancers are bidding on average €16 EUR/hour for this job

Hi, This is a custom ROM NFC payment flow issue, with the main challenge being stable payment method storage, transaction flow, and device compatibility on LineageOS. I would first verify what the Urovo HT66 exposes at the OS level, since contactless payments on custom ROMs often depend on NFC stack limitations and payment app access. My initial focus would be the full payment path: NFC service behavior, payment method handling, and how transactions should trigger without disrupting the tap-to-pay experience. I would also assess security and compatibility early, as “no authentication” may conflict with payment provider requirements or device restrictions. Key work areas: - Inspect LineageOS NFC/payment support - Review Urovo HT66 hardware constraints - Map payment method storage flow - Test contactless transaction behavior - Identify security and approval blockers Question: which payment provider, wallet, or transaction system should the NFC flow integrate with on LineageOS?
€12 EUR in 25 days
9.7
9.7

Hi there, I can help develop and integrate NFC payment functionality on LineageOS for the Urovo HT66, including NFC card/device communication, payment-method management, transaction handling and secure storage. I can work across the Android/LineageOS layer and application side, with strong attention to payment security, device compatibility and reliable NFC communication. I can also review the required payment provider and hardware capabilities first to ensure the proposed solution is technically and commercially feasible. Would you like to share the Urovo HT66 NFC specifications and payment provider/API requirements so I can confirm the best implementation approach? Kindly send me a message to discuss more or directly award me. Thank you!
€13 EUR in 40 days
8.5
8.5

Hello, We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time. We are 25 years in this business and our technical specialists have strong experience in PHP, Mobile App Development, iPhone, Android, Software Development, Payment Gateway Integration, Mobile Development, Technical Documentation, API Integration, Payment Processing and other technologies relevant to your project. Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews. Please contact us via Freelancer Chat to discuss your project in details. Best regards, Sales department Tangram Canada Inc.
€22 EUR in 5 days
8.9
8.9

Hello, NFC PAYMENT & LINEAGEOS — I HAVE 10+ YEARS OF EXPERIENCE IN ANDROID, NFC INTEGRATION, CUSTOM ROMS AND PAYMENT-RELATED SYSTEMS. I understand you need contactless NFC payment functionality on the Urovo HT66 running LineageOS, including payment-method management, secure transaction processing and support for different NFC device types. I can work on the NFC stack, Android integration, secure token/payment data handling and device-specific compatibility. I will also ensure the implementation follows the required payment security standards and Android/LineageOS constraints. One important point is that NFC contactless payments normally require authentication or other issuer/payment-network security controls; I would implement the flow according to the applicable payment scheme rather than bypassing required security. I can provide relevant Android/NFC integration examples, complete source code and post-development support. Thanks, Christina
€12 EUR in 40 days
8.5
8.5

★★★ NFC TECHNOLOGY SPECIALIST ★★★ Hi, Implementing NFC payment functionality on LineageOS presents unique challenges. Ensuring compatibility across various devices like smartphones and wearables is crucial. I recommend considering potential security vulnerabilities, even without authentication, as this could expose sensitive payment details. Testing across multiple devices will be essential to ensure consistent performance. For implementation, I will leverage existing NFC libraries and customize them for LineageOS. I will focus on creating a user-friendly interface for managing payment methods and storing payment details securely. Rigorous testing will be conducted to verify transaction success and device compatibility. To get started, I will need access to the Urovo HT66 device for testing, as well as any specific requirements you have for payment method management. Thanks!
€15 EUR in 40 days
8.2
8.2

Hello, I can help you with "NFC Payment Integration for LineageOS" as per your given project description. We can discuss more in detail during a chat conversation when you are available. I've worked on many PHP projects in recent times. So I am confident on achieving your expected Goals. Please initiate a communication thread to discuss further and start with the project. ⭐ 5.0/5 from a recent client: "A more professional version: “Excellent work! The job was completed within the committed timeline. Great quality, professionalism, and timely delivery. Highly appreciated and recommended.”" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
€12 EUR in 1 day
8.0
8.0

When implementing NFC payment functionality, the key challenge is making sure compatibility across various devices while maintaining security and user experiance. To address potential concerns about data integrity and functionality, I will develop this solution without affecting your exisiting systems. Planning phases: Initial assessment: review requirements and device compatibility for NFC integration. Development setup: create a staging environment for testing on Urovo HT66. Implementation: integrate NFC payment functionality across all specified devices. Testing phase: conduct thorough testing to make sure smooth operation before deployment. Could you clarify if you have specific payment methods in mind for integration? Rajavel
€15 EUR in 10 days
6.9
6.9

Hi there, I can seamlessly implement the NFC payment functionality for your LineageOS project. My expertise in payment systems and mobile app development, coupled with my experience with various custom ROMs, will ensure a smooth integration that allows for contactless payments and management of payment methods. I understand the importance of adhering to security standards while facilitating user-friendly experiences. Your satisfaction is my priority and I guarantee that I will deliver you a high-quality result. Regards, Ali
€12 EUR in 1 day
6.4
6.4

Hello Sir, Imagine transforming your Urovo HT66 into a seamless NFC payment device without any authentication hassles. My unique expertise in NFC technology and custom ROMs guarantees a secure, user-friendly solution that supports various devices and simplifies transactions. Let's connect to discuss how I can bring this innovative payment solution to life for you. Best, Smith
€15 EUR in 40 days
6.5
6.5

This project should begin with a payment-architecture validation rather than assuming standard Android NFC APIs alone are sufficient. Android supports NFC Host Card Emulation, but production contactless payments also depend on the payment processor/acquirer, credential tokenization, device security requirements and the exact Urovo firmware/payment certifications. LineageOS compatibility therefore needs to be verified before implementation. I can start with the Urovo device, review its NFC/payment SDK and your processor documentation, determine whether HCE or secure-element integration is appropriate, and build a controlled proof of concept using test credentials. I would not store raw card credentials or bypass payment-network verification requirements. Where no-PIN/no-biometric transactions are permitted, that must be determined by the applicable EMV/payment-provider rules rather than hard-coded around them. The result will be a tested feasibility assessment, PoC and clear implementation plan for production deployment.
€18 EUR in 40 days
6.3
6.3

Hello! We can build an NFC payment solution for your device and current setup. 1. Which payment methods and transaction flows should be supported first? 2. Do you already have access to the required payment API or provider? — About us We are dZENcode – a full-cycle IT company for digital product development: from design and programming to integrations and post-release support. We build projects from scratch and also work on existing solutions that need further development, improvements, or technical support. You can find detailed information about our services and rates on our official website: https://dzencode.com. Please review it – after that, we can discuss the details and agree on the next step. ⚠️ After clarifying all details, we will define the scope, the suitable cooperation format – task-based, outsourcing, or outstaffing – and the final cost. Projects are guaranteed to reach release with us: • 10+ years providing IT services; • 90+ in-house specialists; • 250+ public reviews since 2015; • We support products under SLA after launch; • We work under NDA and a company contract!
€15 EUR in 40 days
6.5
6.5

Hey there! I can integrate NFC payment flows into LineageOS on the Urovo HT66 with secure payment-method handling and device compatibility in mind. Here's how I'll handle it: * Implement NFC/contactless payment integration on LineageOS * Support payment-method storage and transaction flows * Adapt Android NFC/payment components for Urovo HT66 * Test across supported device profiles and document the build Our 62-person team has 9+ years’ experience. Which payment provider/card network must the MVP support first?
€15 EUR in 40 days
6.0
6.0

Hi, I'm Denis, a full-stack developer specializing in mobile app development and payment system integrations. I've worked on NFC communication, payment processing, and Android customization projects. I understand you need NFC payment functionality on LineageOS for your Urovo HT66 device—storing payment details, processing contactless transactions, and managing multiple payment methods without PIN or biometric authentication. I've built similar systems with secure mobile-to-payment infrastructure communication. The main challenge is handling NFC card emulation on a custom ROM while maintaining reliable payment flows. Here's my approach: First, I'll review your payment protocols and existing APIs or backend systems. Then I'll build the NFC communication layer for card emulation, create an encrypted payment details storage system, and implement transaction logic. Testing will focus on your Urovo device specifically. One important consideration: removing authentication on payments carries security risks. Standard contactless payments use tokenization or transaction limits to prevent fraud. We should discuss what safeguards suit your use case—transaction limits, device-level security, or backend validation. The main risk is that LineageOS modifications or Urovo's specific NFC capabilities might differ from standard Android, so early hands-on testing is essential to catch hardware-specific issues. I'm ready to start immediately. Let's discuss the details. Thanks, Denis.
€15 EUR in 40 days
6.2
6.2

Hi there, Implementing host card emulation on custom LineageOS builds often fails due to strict vendor HAL mismatches, missing secure element hooks on specialized hardware like Urovo terminals, and fatal payment gateway rejections when standard Google Play Integrity checks are absent. Bypassing device-level authentication without a custom local tokenization layer also risks transaction halts and immediate terminal card-read errors. I solve this by developing a dedicated Android HCE payment service tailored for LineageOS, configuring low-level NFC HAL permissions on your Urovo HT66, and establishing a lightweight, encrypted cardholder data store that triggers direct contactless terminal transactions reliably. To ensure we target the exact hardware environment, here are my questions: 1. Which version of LineageOS and Android API level is currently installed on your Urovo HT66 device? 2. Are you emulating an existing card scheme like MIFARE or standard EMV contactless protocols, or connecting to a custom backend payment processor? Drop me a message so we can get started right away.
€15 EUR in 40 days
6.0
6.0

Hi, Integrating NFC payment functionality into LineageOS requires careful handling of secure communication and compatibility with payment standards on a custom Android build. The main technical risk is ensuring reliable and secure transaction processing within the constraints of LineageOS's architecture and hardware NFC capabilities. While my background is primarily in backend AI systems and scalable architecture, I understand the criticality of secure API integration and system modularity in complex environments. I typically design systems by separating core transaction processing, device communication, and security layers to isolate risks and simplify testing. I’d validate early the secure key management and API handshake protocols to ensure compliance with payment standards and prevent data leaks. Implementing fallback and retry mechanisms will help maintain transaction reliability. I can start by outlining the integration points between NFC hardware interfaces, payment gateway APIs, and the LineageOS system architecture to clarify the data flow and security boundaries. Clifton
€15 EUR in 40 days
5.9
5.9

Greetings! I can implement NFC payment functionality on LineageOS for your Urovo HT66, enabling contactless payments, stored payment details, direct transactions, and payment method management. I will focus on reliable NFC behaviour across the device and ensure the payment flow works smoothly without PIN or biometric prompts, as you require for contactless use. Happy to discuss your setup and security considerations. Thanks, Revival
€12 EUR in 40 days
5.5
5.5

Hi there, I understand you want to bring contactless NFC payment capability to LineageOS on the Urovo HT66, with payment-method management and a reliable transaction flow across supported NFC devices. I can investigate the HT66 hardware/NFC stack and LineageOS payment architecture first, then implement the required Android components while keeping the solution compatible with the device’s available NFC controller and secure payment interfaces. I’ll focus on proper NFC communication, payment-method management, transaction handling, device compatibility and clear technical documentation. For payment credentials, I would use the appropriate tokenized/payment-provider approach rather than storing sensitive card data directly on the device. I’ll also verify the security and platform requirements around contactless payments, since authentication requirements and payment-network certification cannot simply be bypassed at the application level. The implementation will be tested on the target Urovo device and documented so the LineageOS build and payment components can be maintained or extended later. Looking forward to work with you. Thanks
€15 EUR in 30 days
5.5
5.5

With a strong passion for mobile app development and an unwavering curiosity that drives me to keep pace with emerging technologies, I confidently present myself as the best fit for your NFC payment integration project for LineageOS. Possessing a wealth of experience in NFC technology and payment systems, I am adept at deploying contactless payment solutions across multiple devices. What sets me apart in this endeavor is my comprehensive familiarity with security standards in payment processing - a necessary bedrock for safeguarding sensitive user data. Furthermore, I have an extensive background in LineageOS or similar custom ROMs, garne_red from partnering with various clients on projects that demanded customized, powerful and secure applications. My transmitter-receiver skills (API & Third-Party Integration) will make sure your Urovo HT66 device is seamlessly interfaced with the solution. Keeping up-to-date with the latest trends, I assure you that your project would reap all the rewards of my knowledge and expertise throughout development; and even after, with my reliable post-launch support. Together, we can create a groundbreaking solution that will redefine the way your users conduct transactions, bringing seamless security to their fingertips via NFC.
€15 EUR in 40 days
5.5
5.5

Perfect Match Moreover, my expertise extends to Android as well as iPhone platforms, allowing me to create a solution that supports all your devices. Delivery is a vital part of my work ethic; I deliver projects promptly without compromising their quality. Having tackled multiple tasks requiring API Integration, Payment Gateway Integration and worked with diverse technologies like PHP, I believe my skillset aligns uniquely with this project's requirements. I appreciate your consideration and would be honored to contribute to this project's success. Let's empower your LineageOS with efficient NFC payment solutions for smooth and secure transactions on all your devices.
€15 EUR in 40 days
5.6
5.6

HELLO, WE HAVE WORKED ON SIMILAR NFC, ANDROID AND PAYMENT INTEGRATION PROJECTS AND CAN PROVIDE RELEVANT EXAMPLES. I have carefully reviewed your requirements and can develop the NFC payment functionality for LineageOS and the Urovo HT66, including NFC communication, payment method management and contactless transaction flow. I have 10+ years of experience in Android and payment-related development and can work with the required NFC and LineageOS components while following appropriate payment security requirements. Working Flow: NFC Integration → Configure NFC communication and required Android components. Payment Methods → Implement secure payment method storage and management. Transaction Flow → Handle contactless payment requests and transaction processing. Device Support → Test functionality on the Urovo HT66 and supported devices. Testing & Delivery → Security testing, validation and deployment. Thanks, Invoke Tech
€12 EUR in 40 days
5.7
5.7

Monheim am Rhein, Germany
Member since Sep 13, 2026
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