I've been trying to understand U2F and still don't see why it's more secure than ordinary OTP in some instances.
For example if I log into a website with a password and an OTP generated by Google Authenticator (for example) on my phone. How is using a YubiKey with U2F, instead of Google Authenticator more secure?
Is U2F a type of OTP in that it's a protocol for OTP?
http://dlvr.it/S1WXD5
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