bluetooth proximity

ian douglas ian.douglas at
Wed Jun 18 20:41:10 CEST 2008

Tilman Baumann wrote:
> Deamons that trigger events when a bloetooth device comes in range have 
> already been implemented.

In Ubuntu and Fedora, check out "blueproximity" -- you sync your
bluetooth device with your PC, and set a proximity level in feet (1..30)
and when the device goes out of range for a preset number of seconds, it
launches a locked screen saver. When the device comes back into range
for another preset amount of seconds, the screensaver is deactivated.

It's pretty handy in secure environments -- I just implemented it
yesterday with both my Blackberry and Samsung Blackjack2, and it works
fine -- I haven't tried it with the Freerunner yet.

I imagine someone could port the code to the OpenMoko platform easily
enough... then you'd just need to pair the two Freerunners with each
other. I don't know whether "sword fighting" would be feasible due to
signal processing and calculating distance in a fast-paced environment.


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