Brilliant idea. When I first read description, I was ecstatic that I would no longer be able to sleep in by snoozing my alarm over and over. EXCEPT....all I need to do is switch the phone to silent mode or do not disturb, and poof. Alarm is off. No need to scan a barcode, pay a fee, or anything. In the end, it is worse than a normal alarm clock because at least with them the snooze feature comes back 10 minutes or so later. Once I silence this alarm, its goodnight again until my body says to itself that it is time to wake up.
Rm9339 about Barcode Alarm Clock