You might also find comments or more information in these posts, here on SN:

https://twitter.com/nvk/status/1550894649845305345

https://nitter.it/nvk/status/1550894649845305345

https://github.com/nunchuk-io/tap-protocol

bitcoin

Signing Bitcoin transactions via one-tap NFC is now officially available!

bitcoinpleb_b

You might also find comments or more information in these posts, here on SN:

*🧵 It's live; [@TAPSIGNER](https://twitter.com/TAPSIGNER) + [@nunchuk_io](https://twitter.com/nunchuk_io)*
https://stacker.news/items/48697
https://twitter.com/nvk/status/1550894649845305345
https://nitter.it/nvk/status/1550894649845305345 

*Coinkite Tap Protocol implemented in C++*
https://stacker.news/items/48694
https://github.com/nunchuk-io/tap-protocol