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CTPI Frontier Series logo

April 2023

Vol. 01

Nº 02


Extending Pix: An approach to offline Dynamic QR Code generation

Jonas de Abreu

Mariana Cunha e Melo

The Pix Dynamic QR Code URI can be extended to allow for offline QR Code generation. The proposed solution involves generating URIs that can be used as a vehicle to transmit information from the client to the server, allowing the payee to generate their own URIs. The document also goes into detail about URI properties, encoding, and cryptography. The proposed design balances tradeoffs between the amount of data that can be transmitted and cryptographic guarantees, and uses commonly available cryptographic primitives to reduce implementation costs.

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