Encrypted Linux disks

[pauldotcom at grymoire.com (Grymoire)]

I have used Aegis Padlock for a Linux-compatible hardware encrypted disk.
As driver support is an issue, this disk has no driver. It has a
friggin' keypad on the disk itself. Plug it in, key the combination,
and you are in.

You can have a master account and several user accounts.

They also have a biometric version.