[K12OSN] Screen Pop - Howto?

C. Duncan Hudson ltsp at dunc-it.com
Tue Sep 1 19:35:10 UTC 2009

Currently the cameras just write an image to a directory on the ltsp 
server when a customer is detected (IR beam broken).  I could do 
something else with the image...  whatever makes things easiest.


Julius Szelagiewicz wrote:
> there are several ways to "pop" a picture on the user's screen.
> You can have an user app waiting for picture showing up in a preset place
> - that can be run from .bash_profile. You can have a single app waiting
> and displaying the pic on all terminals - for that you need a list of
> current DISPLAY variables (I use the single app approach). It is
> surprisingly easy. How does the picture appear on the system? How would an
> app know about it?
> julius
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