There are other things that can be done within the terminal to prevent tampering, e.g., read-only environment,
but the above protects the password from hacking, eavesdropping, and from regular users
in the shop, basically, only the sysadmin and bookkeeper should have remote access via the password.
So, YBDB, although on the internet will be confined to the terminal(s) you allow it to be on, and
the Point of Sale will be at the proper location .. at the front of the Community Bike Shop where people
walk-in/walk-out.
Jonathan Rosenbaum