Hello:

Paystation and PrintBoss have the same purpose but use different technology. PrintBoss costs less and has more flexibility though it takes longer to setup.

We have a client using PrintBoss & Adagio who keeps their signatures on a memory stick. The memory stick is doubly secured because i) it is kept in a locked safe and ii) they have activated security on the memory stick so that a password is required to use any files on it.