Since many users are encountering Bluetooth pairing between hardware, they will encounter many problems, whether it is a single pairing or a permanent pairing. The process of pairing and the necessary operations are too complicated. In the past, in the connection process, it is necessary to utilize The PIN ensures the security of the connection, and the improved connection method automatically uses the digital password to pair and connect. For example, if you select the specific device in the phone option, the phone will automatically Lists the devices that are available in the current environment and automatically links them.
In the short-distance pairing, there is also a NFC (Near Field CoMMunication) mechanism for pairing and communicating between two Bluetooth-enabled mobile phones. NFC is a short-range wireless RFID technology that replaces traditional radio transmission on the basis of electromagnetic waves for short-distance online applications of 1 to 2 meters. Since the NFC mechanism controls the initial detection of the pairing, when two devices in the range are to be paired, simply click on the phone screen to accept the connection. However, to apply the NFC function, the system must have an NFC chip built in or have relevant hardware functions.