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Show HN: A1 – Faster, Dynamic, More Reliable NFC Transactions
A compact and efficient binary messaging protocol designed for NFC - overlay-payments/A1
This paper explains the core principles, message flow, and benefits of A1, demonstrating its efficiency compared to APDU and its suitability for high-performance applications like contactless payments, access control, and IoT systems. By using CBOR (Concise Binary Object Representation) as its foundation, A1 ensures efficient message formatting, leveraging well-established processing rules and developer tools available across many platforms. As NFC technology continues to evolve, A1 provides a scalable, modern solution that meets the demands of high-performance, real-time communication, particularly in use cases where efficiency and low latency are essential.
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