A quick Google Images search for "Disney Magic Band" shows that the bands likely will have a 12 digit unique ID number on them. I would think that it would be likely that this number is the same number that the RFID readers receive from the band. So, if there's a tech malfunction, a CM *should* be able to input that number somewhere to some useful effect. Wouldn't be quick, though, especially if the coded number is on the INSIDE of the band.
'83, '84: Fort Wilderness...'84: Golf Resort
'88, '93: Disney Inn..........'95, '98: Off Property
'00: Dixie Landings...........'02: PO Riverside
'05: Beach Club Villas.......'09, '10 PO Riverside