BlueZ. Just finished a two-day Debian packaging session for the BlueZ Bluetooth utilities. The latest release of the BlueZ kernel modules includes really easy-to-use RFCOMM support. Put simply, this means it's trivial to make your cellphone appear as a normal modem would on /dev/rfcomm0 or similar.
For me, packaging these tools introduced some new things: getting the installation right to create these new devices in a way that works both for devfs and normal systems.
I'm keen to get more time to write some GUI tools for Bluetooth: things are reaching the point now where we have to think about how to make it easy to use for users.
