In what areas is RFID technology mainly applied?

In an era when RFID is widely used, do you know in which fields RFID is widely used?

1. The first one is the application in traffic information, such as electronic parking charging system.

2. The second one is industrial automation, such as product quality tracking system.

3. The third one is material supply chain management, such as the identification of air mail packages.

4. The fourth one is in the area of food and drug safety and traceability. For example, in a pig farm, each pig is equipped with an electronic earring.

5. The fifth one is more common among us. In terms of library information management, every book borrowed from the general library has an electronic tag.

6. Another common thing is that when we go to the supermarket to buy things, everything has a barcode on it.