There are different types of security that Bluetooth uses when connecting with a device over Bluetooth. These include:
Authentication - This type of security ensures that only one device is connected with the other and protects the connection by using passwords or keys.
Encryption - This type of security encrypts data so that it cannot be read by anyone else without having the key or password.
Pairing - This type of security pairs two devices together so they can share data securely in a private way.