I&#x27;m speaking the case of the San Bernardino killers. Using strong alphanumeric pass phrases are anti-usability, the vast majority of people won&#x27;t use them. Hell, the vast majority of people don&#x27;t even have strong alphanumeric passwords on desktop services.<p>So it falls to either 2-factor or biometric to avoid PINs. Biometric of course has it&#x27;s own problems.<p>Perhaps people should really carry around a Secure Enclave on a ring or something, and with a button to self-destruct it in case of emergency.  (e.g. pinhole reset)