In this paper the guys were trying to make a new form of urban art that was interactive. The display they came up with is called Urban Pixels and it is basically a bunch of balls with white lights inside that can be placed on any surface and that can also communicate to each other and have a wireless network so they can be accessed from a laptop. You can also interact with the pixels by using a flashlight and shining it on them to turn each on individually or use a mobile phone to send a signal to them.
Overall i thought this paper was pretty interesting and it seems like the idea is cool. Since they are dealing with just low resolution arrays of these pixels you cant really make any patterns that are very detailed and that is kind of a downer.
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