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Security tags that are tuned circuits consisting of an inductor and a capacitor. These security tags operate at a commonly used frequency of 8.2 MHz. Deactivation of these security labels or security tags is achieved by detuning the circuit orpartially destroying the capacitor by using a strong electromagnetic field.

The AM system/antenna emit periodic tonal bursts at about 58 KHz causing the magnetic strips (of AM label) to vibrate and depending on the change on the magnetization will cause the EAS detection system or antennas to detect the change and sound an alarm.

Source tagging is the application of EAS security tags at the source instead of at the retail chain. For retailers, source tagging eliminates the intense labor required to apply the EAS tags to the merchandise. Source tagging allows the EAS tagsto be concealed within the product packaging and more difficult to remove.

Hard tags are reusable security tags and must be removed at the Point-of-Sale. Once deactivated and removed they are saved for future application to merchandise, and then reactivated.

Security labels that are affixed to merchandise to deter shoplifters. The RF and AM labels are usually small, inconspicuous and usually found inside the packaging of the merchandise. The process of placing the RF labels in the packing is known as Source-Tagging.