[Feature Request] - NFC Support

[641i130]

Not too sure I fully understand how fido keys work over NFC (13.56 MHz) but I did find this NFC rp2040 dev board that might be a good starting point for getting this functional:
https://thepihut.com/products/challenger-rp2040-nfc-with-antenna
I guess you would also need an NFC reader connecting to the computer to test it as well. Here are the ones that people with yubikeys say work:

• https://www.amazon.com/Omnikey-HID-5022-Contactless-Reader/dp/B079T2FKN1
• https://www.amazon.com/dp/B01KIKBYAG

I think its anything with support for ISO 14443-4 (NFC-A) support, from my understanding.

[wzqvip]

nrf52832/840 should be better for this purpose. Like the Charmeleon.

[Kalrkloss]

The nrf52840 can't be supplied from NFC, it needs additional power, which makes it pretty useless as a wireless FIDO2 key.

[DevSnyco]

yes, but can u make it so nfc works when its plugged into power? because if it support nfc, then it supports ios and android too

[DevSnyco]

also, how would the nfc work on yubikeys then?

[wzqvip]

also, how would the nfc work on yubikeys then?

That's a different chip, and possibly could be powered from nfc.

[wzqvip]

The nrf52840 can't be supplied from NFC, it needs additional power, which makes it pretty useless as a wireless FIDO2 key.

Maybe it's fine if you connect it to pc and then tab with phone to auth. )

[DevSnyco]

The nrf52840 can't be supplied from NFC, it needs additional power, which makes it pretty useless as a wireless FIDO2 key.

Maybe it's fine if you connect it to pc and then tab with phone to auth. )

ok, then can we get that feature then?