RF vs AM vs RFID: Choosing an EAS System for Your Store
A practical comparison of the three main EAS technologies against aisle width, product packaging, false-alarm tolerance and inventory needs.
RF (Radio Frequency, 8.2 MHz)
The most widely deployed EAS technology worldwide. RF offers the lowest hardware cost and the widest range of tags and adhesive labels. Detection covers aisles up to about 1.8 metres. It is the right default for clothing stores, boutiques, hardware and general merchandise.
AM (Acousto-Magnetic, 58 kHz)
AM tags contain a metallic strip that resonates at 58 kHz — a signal the receiver distinguishes cleanly from environmental noise. That means near-zero false alarms even beside metal shelving, refrigeration and foil packaging, plus wider aisle coverage up to 2.4 metres. AM is the supermarket, pharmacy and electronics standard.
RFID-EAS (UHF 865-868 MHz)
RFID tags carry a unique EPC code. At the exit gate the system checks each code against the sold list; on the floor the same tags drive cycle counts, shelf-availability alerts and shrink analytics. RFID-EAS costs more per tag but replaces a separate inventory system — the business case is strongest for fashion and multi-branch retail.
A Quick Decision Guide
- Tight budget, general retail: RF
- Supermarket, metal fixtures, wide entrance: AM
- Fashion chain, need inventory accuracy: RFID-EAS
- Library or lending environment: EM (reactivatable strips)