Tesco tried out a grocery store version of this: http://www.designboom.com/weblo...

nimblegorilla on Dec 6, 2011 | parent | context | favorite | on: Amazon Will Pay Shoppers $5 to Walk Out of Stores ...

Tesco tried out a grocery store version of this: http://www.designboom.com/weblog/cat/16/view/15557/tesco-vir...

It seems like most shoppers want the immediate gratification of getting their stuff right away so I think it is hard to find the right mix of products.