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$ 40 TouchWall, maybe?

There is a TouchWall, it's good, but it's worth it all this is not cheap.

And what about the "mere mortals" who do not have so much money to buy?

There is a cheap similar solution using the Wii Remote.
')


Video from www.ted.com , I advise you, a lot of interesting things.

Source: https://habr.com/ru/post/25786/


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