NFC anti metal tag is made of paper adhesive or PVC card with a layer of absorbing material, which can achieve the effect of anti metal interference. The label can be read and written on the surface of metal. PVC with metal resistant label can prevent water, acid, alkali and collision, and can be used outdoors.
The NFC anti metal tag produced by MINA can be with the following four categories of NFC labels:

The first type of NFC anti metal tag is based on 14443a protocol. The minimum label memory is 96 bytes, which can be dynamically expanded. If tags only involve simple read-write storage, such as the implementation of simple intelligent poster function, such tags are fully available. This kind of tag is mainly used to read information and has the advaes of simple operation and low cost.

The second type of NFC anti metal label is also based on 14443a protocol, but only supports card provided by Phlips.

The third type NFC metal resistant label is the fecila technology type provided exclusively by Sony.

The fourth type NFC anti metal tag is with 14443A/B protocol. This kind of tag belongs to intelligent tag, receives the instruction of application protocol data unit (APDU), has large storage space, can complete some authentication or security algorithm, and can be used to realize intelligent interaction and related operation of dual interface label. This kind of label has a wide range of applications and can adapt to the continuous research and development in the future.