Manufacture and sales of the yellow bluetooth device has been discontinued. This FAQ is kept for historical purpose.
If your mobile allows it and has connectivity (i.e. you can browse on your mobile), then just point your browser to http://www.hexcode.co.za/GS911Verifier.jar or http://www.hexcode.co.za/gs911verifier.jar depending on the case sensitivity of your mobile browser
...Voila!