Bluetooth
Maemo devices have a built-in Bluetooth radio that allows you to do things like tether to a cellphone for a data connection, transfer files between devices, and connect input devices.
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Bluetooth Under Fremantle
Some Bluetooth profiles have been disabled or removed from Fremantle, but can be "hacked" to work. Please see Fremantle Unsupported Bluetooth profiles for more details. Maemo Bluetooth capability is based on the Linux BlueZ software stack
Networking
There are two Bluetooth networking protocols. The first, DUN, is well-supported in Maemo and is the recommended method for tethering to a cellular device. The second, PAN, does not have official support, but is well-supported by the community. PAN is faster and more versatile, but supported by fewer devices than DUN.
Dial-Up Networking
Main article: Bluetooth DUN
DUN is the primary method for tethering to cellular devices. It is easy to set up and easy to use, but slower than PAN in many cases.
Personal Area Network
Main article: Bluetooth PAN
PAN is faster and more versatile than DUN, though supported by fewer devices, and not officially supported in Maemo, but support is provided by the community package maemo-pan. PAN is particularly useful for setting up Bluetooth networks between your computer and your tablet.
Input devices
Main article: Bluetooth HID
Input devices are probably the most common use of Bluetooth. Keyboards are what most people will use, but Bluetooth mice are also an option, as well as interesting accessories like Wiimotes.
Bluetooth keyboards will work out-of-the-box without only a little setup.
Bluetooth mice are more problematic, as, by default, the mouse pointer is invisible in Maemo, but they can be used with just a little configuration.
File transfers
Main article: Bluetooth OBEX
To utilize Bluetooth for file transfers to or from a Bluetooth device the OBEX profile is used. Many mobile devices support this profile.