It's vaporware. With money to burn, and a big pile of it burning nicely under a budget code for research, Walmart would patent birds singing and fish swimming if they thought they could squeeze a nickel out of it later. There's no there there, at least not from Walmart, other than cubic money they might as well throw at patent attorneys and fees. Because you know they'd never waste any of that on their, [pinches nose shut] 'employees.'