Password Caliper takes this familiar instruction literally, using a precision digital caliper to measure how much space a password occupies as it is typed. For the first time, “not long enough” can be expressed as an exact numerical deficiency.

Because if a website insists that your password must be longer, it should at least specify the unit.

For decades, websites have asked us to create longer passwords. Nobody thought to use a ruler. Until now. Password Caliper brings precision measurement to an industry that has operated without a ruler for far too long.