I’m really just learning ActionScript, but I would like to help. The blue tooth idea is great. Also is something I really wanted to use in my app. Can you tell me want your stuck on? Maybe I can get some answers for you. Let me know
I think the best way is to have a rear di and have it take a picture of the bottom of the device when something like it is placed on the table it tries to connect to that device. It may be complicated but would eliminate the need for a tag on the bottom of the device.