Working principle of the anti-theft EAS milk powder cap

The anti-theft EAS milk powder cap is a security device used to prevent milk powder from being stolen, and is commonly found in supermarkets and shopping malls. This cover uses EAS technology and works as follows:

1. Basic composition of EAS anti-theft system

EAS anti-theft systems generally consist of tags, sensors, and alarms. The EAS tag in the milk powder cover communicates with the sensor at the door through electromagnetic waves or radio frequency signals.

2. EAS tag on milk powder cover

RF tag: Usually embedded or attached to the milk powder cover, it contains a small radio frequency chip. The chip can communicate wirelessly with the sensor in the EAS system.

Induction principle: The EAS tag on the milk powder cover will be activated in the sensor area at the entrance of the supermarket or shopping mall. If the lock on the tag is not released, the sensor will recognize this signal.

3. Workflow

Under normal circumstances: When a customer buys milk powder, the store staff will use an unlocker to remove the anti-theft tag from the milk powder cover or unlock it.

When unlocked: If a customer leaves the store with the milk powder cap without authorization, the sensor will detect the RF signal on the milk powder cap and trigger an alarm. In this way, staff can detect and deal with the theft in time.

4. Locking mechanism

EAS tags usually have a built-in security lock. When unlocked, the milk powder cap cannot be removed or opened normally.

Some milk powder caps are also used in conjunction with other physical anti-theft measures, such as embedded locks, to increase the difficulty of theft.

5. Technology type

RF technology: This tag communicates with the sensor through radio frequency waves and is widely used in retail anti-theft.

AM technology: Another common technology, based on the principle of acoustic magnetism, usually requires specific magnetic field equipment for detection.

Summary: EAS anti-theft milk powder caps use radio frequency or acoustic magnetism technology to communicate with sensors through embedded security tags to prevent milk powder from being stolen. When customers leave the store without unlocking the tag, an alarm will be triggered to remind staff to deal with it.