Radio Frequency Identification (RFID) is a contactless, two-way wireless identification technology that uses radio waves. It can automatically track and identify target objects without mechanical contact or optical alignment.

System Composition

Tag: A miniature wireless transceiver attached to target objects, storing a unique digital ID or other data. Tags are categorized as passive (no battery, powered by electromagnetic waves from the reader/writer) and active (with built-in battery for longer communication range).

Reader/Writer: A device that transmits radio interrogation pulses and receives data returned by tags.

Software: Backend software used to process, analyze and manage data collected by the reader/writer.

Main Features

No line-of-sight alignment required: Unlike barcodes or QR codes, RFID tags can be read even when embedded inside objects or out of sight.

Wide identification range: Depending on different frequency bands (such as LF, HF, UHF), the reading distance varies from several centimeters to more than ten meters.

Efficient bulk processing: A reader/writer can scan and identify hundreds of tagged items simultaneously within one second.

Common Application Scenarios

Logistics & Warehousing: Rapid goods counting, inventory tracking and supply chain management.

Access Control & Transportation: Employee attendance cards, Electronic Toll Collection (ETC) for highway non-stop toll payment, and public transit contactless cards.

Retail & Anti-counterfeiting: Fast in-store stocktaking, authenticity verification of luxury goods and self-checkout.

Animal Management: Identification and tracking for pets or livestock.