As someone pointed out on Ars Technica, it’s an almost spooky idea to have a program that can act on you appearing. As OS X already has a built-in functionality to just speak your alerts aloud (on my laptop, it regularly has a ‘discourse’ with me about my battery being empty), the added functionality of the speech synthesis in OS X makes it easier for developers (like me) to add more of those spooky features. With motion-detection now out of the box, and face feature recognition around the corner for iSight Expert, I’ve done a bit of work to let it do a saved Quicksilver action when I appear. Now, without further ado, here’s the HALbook.

As you can see, it’s an… er, out of the studio session, and it’s sensitivity can be set lower so ‘accidental’ motion (which I tested here with the TV) isn’t picked up. More to come as the app progresses.