How does it work?

On a very simple level, Deadbolt uses the numeric values of the characters used in your memorable phrase and puts those numbers through a series of calculations. The resulting numbers are then turned into your strong password. The calculations are deliberately inaccurate, losing information along the way to ensure they are irreversible, however the same phrase will always generate the same password.

For the more curious of you out there, the full source code is available on GitHub

What makes Deadbolt different to a password vault?

Unlike 'password vaults', that store all your passwords securely behind a master password, Deadbolt never stores or transmits any personal information whatsoever leaving you fully in control of your data.

Since passwords are never stored, they only really exist between the time you generate them, until the time you've used them.