How will they prevent hackers from purposely causing false positive? I can see wardrivers now setting up rig in some van blasting high powered signal from a spoofed device .... they could go around causing people to freak out thinking they have been exposed and that would overwhelm the healthcare even more... if this was just Apple I would have confidence but I have no confidence with anything Android related being safe from hacks. Seems like a good idea but may go very badly if this is rushed and poorly implemented