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"Never memorize something that you can look up."

+Albert Einstein 

Complexity is your enemy. Any fool can make something complicated. It is hard to make something simple http://virg.in/cye

Walmart has reportedly started testing a new iPhone-based self-checkout system. Taking a test spin first at a Walmart in Arkansas, the program would allow a customer to scan merchandise using his or her iPhone, and then pay for the items in their cart at self-checkout without ever having to deal with a cashier in the process.

The company recently announced it would be adding more self-checkout lanes to Walmart and Sam's Club stores in an effort to cut costs and lower prices for customers. iPhone-based...