Collin and I began working together on a project called Blueprinting. The idea behind Blueprinting is to determine manufacturer and model of active bluetooth-enabled devices remotely.
There is a prototype script already, but there is still some work needed. Actually, there is some ambiguity for certain models. Obviously, different Series60 phones from Nokia use the same firmware. At least our hashing produces the same fingerprint... (one case we get the same fingerprint is a certain version of the Nokia 3650 and a version of the Nokia N-Gage)