12.20 Passkey Value Parameter

The passkey value parameter helps the user to select the value during the pairing procedure if the user chooses the passkey entry as the chosen pairing method. The IS187x device uses this parameter as the six-digit pin code value in the pairing procedure instead of a randomly generated six-digit value. For further details on the passkey entry pairing method and its associated security properties, refer to the Bluetooth Core Specification (4.2), volume 3, part H.