RFID
RFID (Radio-Frequency Identification) is a wireless technology that uses electromagnetic fields to automatically identify and track tags attached to objects. It enables data transmission between a reader and a tag without physical contact, commonly used for inventory management, access control, and asset tracking. The system consists of tags (with microchips and antennas) and readers that capture the tag data.
Developers should learn RFID for applications in logistics, retail, and security where automated identification is critical, such as tracking goods in supply chains or managing library assets. It's essential for IoT projects, smart cities, and contactless payment systems, offering advantages over barcodes like longer read ranges and bulk scanning capabilities.