Trius
macrumors 6502a
Jail break doesn't add features. It removes restrictions on the iOS for the features apple buried or removed access too.
Jail break devs in this case didn't add a small collection of BT mouse drivers and inject the UI code to read mouse movement.
I understand Jailbreaking in itself doesn't add any features. It simply blows a hole in the walled garden. As far as mouse support by simply jailbreaking and pairing a mouse? If that's truley the case, i'm surprised. I would assume some software would have to be installed post jailbreak to allow this functionality. Considering there is no UI for it, for example.