Is there a way to replace password lock screen in Linux (Mint Debian Edition) with a pin lock screen? Like the one found in Windows 8 for example. It's annoying/inconvenient to have to input 16 character-long passwords every time I lock my computer, and insecure to decrease the password length to a pin-friendly length.
Clarification: Pin: 4 character-long password that's used only in the lock screen. i.e. the regular user password to execute functions is still the same throughout the OS (for security).