Electronic tag is a kind of data carrier, which can be used for reading and writing, storing data and automatic identification. Electronic tags are also called radio frequency tags, transponders and data carriers.

Etc electronic tag is different from electronic tag. Etc electronic tag is an electronic system, that is, etc equipment. After installing etc equipment, the user can read the balance information of the pass card through the electronic tag, and at the same time, when the user's vehicle passes through the etc lane, it can communicate with the antenna erected above the lane to confirm the distance and deduct the fee.