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I did not claim that it was the same security scheme or that it's biometric or anything like that. I did claim that you have to physically touch it to activate it.
Edit to add:
re 'Yubikey Nano is a "thing you have", TouchID is a "thing you are".', I would argue that your finger is in fact a thing you have. The loss of a finger might change a little of who you are depending on the circumstances that led to you losing said finger, but these both fall into "thing you have" territory for me. I don't think it's wise to consider Touch ID much more than that, personally.