Additionally passwords are protected by the fifth amendment [1]. A hardware key is not. This is a big part of why you always want one of your factors to be so

Additionally passwords are protected by the fifth amendment [1]. A hardware key is not. This is a big part of why you always want one of your factors to be something you know. [1] https://en.wikipedia.org/wiki/Fifth_Amendment_to_the_United_States_Constitution#Combinations_and_passwords https://en.wikipedia.org/wiki/Fifth_Amendment_to_the_United_...