US Patent 11210641 Processing electronic payment transactions in offline-mode

In some examples, methods and systems may process one or more payment transactions between a payee and a payor by establishing a short-range communication channel between a first computing device associated with the payee and a second computing device associated with the payor. The method includes receiving, by the first computing device and from the second computing and while the first computing device and the second computing device are offline with respect to a transaction processing system, first payment information including an identifier corresponding to the second user; sending, by the first computing device to the second computing device while the first computing device and the second computing device are offline with respect to the transaction processing system, second payment information that includes an identifier corresponding to the first user; establishing, by the first computing device, a long-range communication channel with the transaction processing system; and transmitting a transaction request by the first computing device to the transaction processing system based on the identifier corresponding to the second user.