How do EAS security tags work?

Electronic Article Surveillance (EAS) security tags are commonly used in retail stores and other businesses to prevent theft and protect merchandise. These tags work by creating an electronic surveillance system that triggers an alarm if a tagged item passes through a detection zone without being properly deactivated or removed. Here's a general overview of how EAS security tags work:

Tag Types:

There are various types of EAS security tags, including hard tags, soft tags, and labels. Hard tags are usually more durable and are often used on larger items, while soft tags and labels are more commonly used on clothing and smaller items.

Tagging Merchandise:

Retailers attach EAS security tags to merchandise using different methods depending on the type of tag. Hard tags are typically attached using a pin or a lanyard, while soft tags are often adhered using adhesive or inserted into packaging.

Detection System:

EAS security systems consist of a detection system installed at the exits of a store or a designated area. This system includes antennas or sensors that emit radiofrequency (RF) signals.

RF Technology:

Most EAS systems use RF technology. RF security tags contain a resonant circuit that responds to the RF signal emitted by the detection system. When a tagged item passes through the detection zone, the resonant circuit reacts to the RF signal.

Alarm Activation:

If a tagged item passes through the detection zone without being properly deactivated or removed, the resonant circuit in the tag disturbs the RF signal. This disturbance triggers an alarm, alerting store personnel to the potential theft.

Deactivation:

When a customer purchases an item, the cashier deactivates the EAS security tag at the point of sale. Deactivation typically involves using a deactivation pad or an electronic deactivation device. This process ensures that the item can be taken through the EAS detection system without triggering an alarm.

Reactivation Prevention:

Some EAS tags are designed to resist tampering or removal attempts. If someone tries to remove or tamper with the tag without deactivating it, it may cause the tag to self-activate and trigger the alarm.

It's important to note that while EAS systems are effective in deterring theft, they are not foolproof, and determined shoplifters may find ways to circumvent them. Therefore, EAS is often used as part of a broader loss prevention strategy that includes security cameras, employee training, and other measures.