Linux Unwired [Electronic resources] نسخه متنی

7.8 Cool Bluetooth Tricks

Aside from the everyday file management and connectivity,
Bluetooth on Linux provides scope for
some fun applications. This section outlines a few of them, mostly
involving interfacing a cell phone with your computer.

7.8.1 Use a Bluetooth Cell Phone to Control Presentations

Wireless devices that control
presentations have
been available for some time, but at a relatively hefty price tag,
they're probably not worth the investment for the
occasional presenter. Instead, why not program your cell phone to do
the work?

This trick works with Ericsson phones, such as the T610, T68i, and
R520m. These phones provide an advanced ability to map keypad presses
to output over an RFCOMM serial connection. In turn, a program
running on the Linux side can translate these codes into system input
events.

You can find the code at http://www.hackdiary.com/projects/bluetoothremote.

7.8.2 Controlling Music Players

Using a similar trick as mentioned previously, the popular
MP3-playing
application XMMS can be controlled from a suitable Ericsson phone.
The bluexmms program even supports display of
the MP3 playlist on the phone's screen. You can find
instructions and a download at http://linuxbrit.co.uk/bluexmms.

7.8.3 Proximity-Sensitive Screen Blanking

The BlueZ Bluetooth stack reports the signal strength of an active
Bluetooth connection. The KDE
Bluetooth Framework has a
program that takes advantage of this and activates your screensaver
when you take your cell phone out of range.

If you don't run the KDE desktop, then try Jon
Allen's Perl script to do a
similar task, available from http://perl.jonallen.info/bin/view/Main/BluetoothProximityDetection.