Card emulation: This mode is actually equivalent to an IC card using RFID technology. It can replace a large number of IC cards (including credit cards) in shopping malls, bus cards, access control, tickets, and so on. In this way, there is a great advantage, that is, the card is powered by the RF field of the contactless card reader, and it can work even if the host device (such as a mobile phone) is out of power.
Peer-to-peer mode (P2P mode): This mode is similar to infrared and can be used for data exchange, but the transmission distance is shorter, the transmission creation speed is faster, the transmission speed is also faster, and the power consumption is low (Bluetooth is similar). Linking two devices with NFC function can realize point-to-point data transmission, such as downloading music, exchanging pictures or synchronizing device address books. Therefore, through NFC, multiple devices such as digital cameras, PDAs, computers and mobile phones can exchange data or services.
Reader mode (Reader/writer mode): Used as a contactless card reader, such as reading relevant information from posters or exhibition information electronic tags.
