> This is a pretty compelling U2F solution. It matches the price of a Yubikey Not really. The $50 Yubikey does a lot more than these (e.g. storing PGP keys, e

> This is a pretty compelling U2F solution. It matches the price of a Yubikey Not really. The $50 Yubikey does a lot more than these (e.g. storing PGP keys, etc). If you only want U2F, Yubico sells their blue key for only $20 (or a 2-pack for $36): https://www.yubico.com/product/security-key-by-yubico/#security-key https://www.yubico.com/product/security-key-by-yubico/#secur... I've been using them for years and see no reason to switch.