I've been obsessed with Iris Diaphragm doors since seeing one in this video and always wondered how they worked. Well after watching a few videos I got the general idea and started doodling in Sketchupmore

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or "how i deployed a fake webcam stream to wind up a bunch of people"more

The London Hackspace has a fantastic door-entry system thats been custom built and improved over the years, currently members can unlock the door with Oyster cards (or any other high frequency RFID devices) which then broadcasts an event over the network to trigger various things. One of these is something Ben Blundell built to announce door openings with a GladOS …more