That, at least, is a problem that cab be solved by tightening security at supplier site.

The safeties are mainly to guard against the rest of the world. For example it prevents tampering in transit, or even in our own company - disgruntled employee can't do anything.

Or think for a second about the fact that we leave the device for, hopefully, entirety if its life at the client site. We had clients that were shady businesses like strip clubs that no other companies would touch with a stick.