How does Red Rice 2 Watch Enter Property Access Control?

Click on the Xiaomi key card; Click to select the key card;

Stick the door card on the nfc sensing area on the back of the mobile phone;

It shows that the card is being read for about one minute. Do not move the access card during the card reading process;

Read the card successfully, name the card, select the card cover, and then click Finish.

From the principle of opening the door: opening the door by mobile phone is nothing more than transmitting the unlocking information to the lock through Bluetooth, Internet or nfc.

Nfc simulates the IC card through the nfc function of the mobile phone to realize the opening of the mobile phone. The advantage is that the mobile phone can be turned on without changing the equipment. The disadvantage is that the proportion of mobile phones supporting nfc in the market is less than 30%, so it cannot be used on a large scale.