RFID
RFID (Radio-Frequency Identification) is a wireless technology that uses electromagnetic fields to automatically identify and track tags attached to objects. It consists of a reader that emits radio waves and a tag with a microchip and antenna, enabling contactless data transmission for applications like inventory management, access control, and logistics. Unlike barcodes, RFID does not require line-of-sight scanning and can read multiple tags simultaneously.
Developers should learn RFID when building systems for supply chain tracking, asset management, or IoT applications where automated identification is critical, such as in retail, healthcare, or manufacturing. It's particularly useful for scenarios requiring real-time data collection, enhanced security (e.g., in access cards), or handling large volumes of items efficiently, as it reduces manual errors and speeds up processes compared to traditional methods.