NFC/RFID tags and transponders are small devices that use radio frequencies to communicate with other devices. These tags and transponders act as remote identifiers that can store, retrieve, and provide data from a distance. They are mainly used for contactless communication across a specific distance. NFC and RFID tags are most commonly used in contactless payment systems and access controls. Additionally, these tags are also used for identification and tracking purposes. The tag can store a large amount of information, allowing users to track their items in real-time.