Reverse shoplifting edition, the link is from Japan by the way. As it is explained to me in an email:
(Del Monte whole kernel corn no salt added)2012-Canned corn and receipts
Dimensions variableThe artist takes one canned good to multiple supermarkets and re-buys it. This single can of corn has been re-bought from 105 supermarkets for a total of $113.07. ( as of June1, 2013 )This procedure is possible because the stores have no way to identify individual items: the barcode printed on my can’s label, #240950, refers to its contents, and not to that particular can.
I suppose in expected value terms this is more rational and more profitable than non-reverse shoplifting, also known as shoplifting. For the pointer I thank Pamela Regis.