How to use the IC induction card at the entrance of the hotel?

As long as you brush the door card at the sensor under the door handle, there will be a prompt sound. When you hear it, turn the handle and it will open. In addition, a better hotel card will have relevant instructions.

Induction card, that is, contactless IC card, is a new technology developed internationally in recent years. It successfully combines RF technology with IC card technology, solves the problems of passivity (no power supply in the card) and contactless, and is a major breakthrough in the field of electronic devices. A card that exchanges data with read-write devices in a non-mechanical way to complete all or part of the functions of an IC card. It is the product of the combination of IC card and radio frequency identification technology, and belongs to non-contact IC card (also called radio frequency card).