In response to our recent discussion about passwords and the push to get rid of them, a reader had this suggestion: “It seems to me that some sort of USB key with a password encrypted on it could be used for all sites. A 4 or 6 number passcode would open the decrypter to allow the password to be used. This would be like 2-factor authentication as you would need both the key and the pin.”
The issue with that idea is that these days the majority of people no longer access their devices from a device with a USB port. Most accounts are accessed from mobile devices. While some Android devices support microUSB, Apple devices do not. So, it would be difficult to have one key capable of serving as a key for accessing your accounts across multiple devices.
The real struggle is finding something that people can always have with them, that can be used across multiple devices, is difficult to steal or replicate, and not something people will forget or lose. That’s why many think biometric locks are well…key.