The full name of ID card is identification card, which is an unwritten induction card with a fixed number. There are mainly the EM format of SYRIS in Taiwan Province Province, and various ID cards such as HID, TI and Motorola in the United States. The frequency is 125KHz, which belongs to low frequency. Usually used for access control.

The full name of IC card is integrated circuit card, also known as smart card. Read and write, large capacity, encryption function, safe and reliable data recording, more convenient to use, such as all-in-one card system, consumer system, etc. At present, there are mainly Philip Mifare series cards. The frequency is 13.56MHz, which belongs to high frequency.

The UID card is an IC card and can modify any sector. As a daughter card of M 1 replication, it is mainly used for IC card replication. This card is fully compatible with mifare 1k card. The block where the card's block UID is located) can be modified repeatedly at will.