The technology known as RFID utilises wireless radio waves to locate and identify physical objects that carry an electronically encoded tag.
Unlike barcode scanning, RFID can scan multiple tags simultaneously using radio waves. Provided the radio signal extends to the tags, they can be read.
This technology is widely used in supply chain management, inventory tracking, access control, and retail (e.g., electronic article surveillance) due to its ability to read multiple tags simultaneously without requiring a line of sight.
In addition to RFID, other automatic recognition technologies include 2D codes, voice recognition, and biometric authentication. The adoption of these tools is accelerating as a means of improving business operations and enhancing security.