Before using the wedge with Bluetooth you must do some additional configuration.

• Open a terminal.
• Click the scan button on the barcode reader to make sure it's in discoverable mode.
• Enter the command hcitool scan
• The result should be a list somewhat like this:

Scanning ...
    00:A0:96:0B:21:78   Cordless
    00:01:E3:72:FE:5C     Homephone

• Now copy the MAC address (list of numbers with colons) next to the name of you barcode scanner.
• Enter the command hcitool cc 00:A0:96:0B:21:78
• The bluetooth icon on your menubar should start blinking and a popup should show asking you to enter a pincode. (My computer sometimes doesn't show the popup. If this happens to you just doubleclick on the blinking bluetooth icon and you will be requested the pin code).
• Enter the pincode 0000 (The standard pincode for Microvision barcode readers).
• Go into bluetooth preferences (right click on the bluetooth icon) and tag the barcode reader as Trusted.
• Open /etc/bluetooth/rfcomm.conf as root in your editor of choice

sudo gedit /etc/bluetooth/rfcomm.conf

• Add the following entry to the file (using the MAC address you previously copied):

rfcomm0 {
    bind no;
    device 00:A0:96:0B:21:78;
    channel 1;
    comment "Flic barcode reader serial port";
}

• If you already have an entry for rfcomm0 just replace 0 with a higher number.
• Run the command sudo /etc/init.d/bluetooth restart

You can now use the software in exactly the same manner as described under tethered use. Just replace /dev/ttyUSB0 with /dev/rfcomm0. Make sure always to put the scanner in discoverable mode (by clicking the scan button) before starting the software.

Enjoy!

I'm happy to receive feedback, tips or questions.