Background:

It turns out that it is possible to use supermarket self-checkout machines to buy nothing. The artist interacted frequently with the machines in this way during a three month period. Over one hundred of the receipts, recording these non-transactions, were collected. This is a recording of one interaction.

See also:
Film: https://vimeo.com/126480392
Book: http://artsproducts.blogspot.co.uk/2014/12/less.html
Audio: https://soundcloud.com/mocksim/self-checkout-interaction

Self Checkout Interaction (Long)

Mocksim