Bird Surveillance System – a network of sensors hidden in tree-like areas, like birds, that observe you. When you rush by, they tweet one note and light up red. But when you stop to observe their presence, they cycle through a sequence/arpeggio of light and sound. There are three of them hidden throughout the space. Find them, get your friends to join in, and make music out of the surveillance network.
Are they birds, or surveillance cameras?
What is the interaction? How can they be quiet when nobody is around, beep fast when there’s a lot of movement (someone rushing by), but play music when somebody stops to interact?