https://media.ccc.de/v/camp2023-57130-online_selling_without_internet_connection

Modern buyers enjoy the convenience of digital payments, but not all
points of sale always have an Internet connection. Trusting the buyer’s
device to honestly report that a payment was definitively made puts merchant’s revenue at risk. We present an inexpensive and usable solution for merchants to verify that a buyer correctly completed a payment even when the point of sale is offline.

The talk will cover the design details and talk about the current implementation using GNU Taler: a free software, privacy focused and online payment which is built with some properties of cash.
https://taler.net/en/

sebasjm

https://pretalx.c3voc.de/camp2023/talk/UH9MYT/

#camp2023 #BitsBume