> Ideally what I'd want is an NFC ring or a smart band/watch that can use FIDO's U2F or a similar protocol that works through NFC I've got my eyes on a Yubikey

> Ideally what I'd want is an NFC ring or a smart band/watch that can use FIDO's U2F or a similar protocol that works through NFC I've got my eyes on a Yubikey NEO for just this kind of use: https://www.yubico.com/products/yubikey-hardware/yubikey-neo/ https://www.yubico.com/products/yubikey-hardware/yubikey-neo...