What a load of bollocks!
Using GPS receivers inside a tape cartridge/box...
Works OK until someone throws it into the back of an old van to take it to the offsite storage.
There's a good reason why in-car GPS needs to either be mounted on the dash, or have an external antenna...
The ONLY WAY to keep the data safe is by PROPER ROUTINES!
Many tapes now have bar-codes or even RFID on them.
Make certain that EVERY TAPE removed from the room with the tape drives is tagged and SIGNED FOR. (On this point, he may have to assign codes for 'scrapped', 'off-site' or whatever. If 'off-site' is selected, a shipping manifest is generated)
Then, the driver of the van also scans them, and if the list matches up with earlier manifest, signs it.
At arrival on the off-site storage, every tape is also scanned and signed for.
This way, if a tape 'goes missing' at any point, it will show up immediately.
Not that it should matter, as every bl**dy tape should always be encrypted!
That not secure enough?
Then transport tapes in special cases which will destroy the contents if opened without the proper authorization or if it has been 'on the road' for too long.
Can't be that difficult to make one...