Must be nice to check out 34 customers at a time though, right?
I kid.
Fragmentation is a huge issue in the retail industry. I've heard of companies that have different payroll staffers for different states, some that have different phones for different states because of fees, etc etc.
It also seems like there might be potential for a POS device that could 'spoof' other devices, to avoid fees and such. Surely it's just sending out certain headers to identify itself, right?