The first showed how many PCs were currently free for use:
This called to a Web Service created by our central IT Services, which monitored the logins across campus in real time. With a bit of tweaking, it was quick enough to restrict this to machines in the Library.
Because of the kiosk's touch-screen, users could click on an area with free PCs, and see the location on the floorplan (complete with pulsing marker pin).
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