Explained: How Supermarket Anti-Theft Door Scanners Detect Shoplifting

Electronic Article Surveillance (EAS) systems are used in supermarkets to prevent shoplifting. They operate through antennas at the store entrance and tags attached to merchandise. There are two main types of EAS: AM (Acousto-Magnetic) and RF (Radio Frequency), each with its own characteristics and applications. Cashiers deactivate security tags by passing items over a deactivator pad integrated into the barcode scanner.