how do the sensory machines at the doors of big shopping chains work? how do they know when someone is walking out of the store without paying for the certain object
In: Technology
The sensors are tied to radio tags on/in merchandise. Those big plastic tags on clothing or the extra tag inside some products need to be removed or deactivated or they’ll set off the alarms. If you look at a check out counter at places like Target, there’s often a big grey pad with a circle on it that a cashier will run a product over a few times before bagging. That deactivates the anti shoplifting sensor in said product so it doesn’t trigger the door alarm. Same goes for the plastic tag on clothing. It contains an RFID chip that sets off the alarm, so needs to be removed at the counter when the item is paid for.
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