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Processing is a great open source application for artists and experimenters. This Minority Report style application was created in 20 minutes! Amazing! Check out the link to download the source code. [Thanks Guru]

Today I read about touchless an opensource sdk microsoft has released. it enables you to track objects using a simple webcam to create apps similar to a multitouch display.

Then I spent about 20 minutes coding a processing sketch that does roughly the same :-)

As you can see in the screenshot I cant affort the same cool toys the microsoft coder has in the demo video, so I had to use some post-its instead

Read more about “Touchless” Multitouch in Processing