Austrian design duo Mischer'Traxler talk to Dezeen editor-in-chief Marcus Fairs about how their basket-building machine will only work when someone's watching in this movie we filmed at Clerkenwell Design Week.

Called Collective Works, the machine uses sensors to detect an audience and starts to glue together strips of wooden veneer.

When more bodies join, felt tips pens make contact with the veneer and apply colours for as long as the onlookers remain clustered round it.

"If the process ends with just something to look at, it's not enough," says Katharina Mischer when describing their projects, "the outcome needs to be as strong at the process".

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