Barcode scanner for user login

This would be really nice because I have found a nice cheap time clock that works with a barcode scanner and uses a finger print reader to clock in employees. TimeClock MTS Ive tested it with the finger print reader and a magnetic card swipe and it works great. Only problem is that if a uses looses the magnetic card it could become a pain and eventually could cost money to program a new one so if I get a barcode scanner that should solve the problem. I just need to setup both systems to use the same user id/pin and if a employee looses their barcode the manager could just reprint it for them.