... chips caused more than a million per year. Take the electronic factory which is 5000 workers for example, the theft ... out. ( Option)Face Recognition, can avoid unauthorized people entering the electronic chips area.(Option)Image transmission function, the record can keep ... English Alarm. (Option)Detection: Shoes and Leg.Type of Metal:Electronic Chips, Detonator, Gun, Knife etc.Where to use: Prisons, ...