109Appendix 4 Pairing (Device authentication)Pairing (or bonding) is the Bluetooth® authentication process for confirming the device at the other end and thusblocking indiscriminate access from just any Bluetooth® device. It involves mutual authentication between twoBluetooth® devices by exchanging a mutually agreed PIN code (or pass key) when they first connect. This approachallows the two devices to both establish a secure link and rapidly access device services without re-entering the PINcode for subsequent connections.The timeout interval for scanner pairing is 2 minutes 30 seconds. Failure to complete pairing within this interval shiftsthe scanner to its standby state. Success shifts it to its connection standby state.The scanner supports PIN codes 0 to 8 bytes long consisting of letters, digits, and certain other ASCII characters.Changing scanner PIN codeThe scanner ships with an initial PIN code of 1234. Use the scanner configuration software (ScannerSetting) tochange this.Initiating pairing from the scannerThe following is the procedure for initiating pairing with the target Bluetooth® device from the scanner.ScannerStore connection datafor target Bluetooth®deviceUse the scanner configuration software (ScannerSetting) to configure the scanner formaster operation and then enter the Bluetooth® address for the target Bluetooth®device and the PIN code.↓Target Bluetooth® deviceSwitch to pairingstandby stateSwitch the target Bluetooth® device to its pairing standby state.Note: For the procedures for switching to the pairing standby state, refer to the deviceand other manuals.↓ScannerInitiate pairing requestRead the "Paring" bar code symbol.Note: This operation aborts if there is no response from the target Bluetooth® devicewithin 2 minutes 30 seconds.↓ Scanner's indicator LED: Flashes green (flashing pattern similar to connection as master)End of authenticationoperationSuccessful completion of the pairing operation switches the scanner's indicator LEDto blue and sounds the scanner beeper once.Failure switches the scanner's indicator LED to red and sounds the scanner beeperonce with a longer tone.The scanner waits in its connection standby state for a Bluetooth® wireless link.
