Attention, Walmart shoppers (on Android): the Scan & Go app is finally here. Back in 2013, the giant retailer began testing a new way to shop. Basically, you wander as normal through Walmart, placing items in your cart as you go. What makes this experience different is that you then scan the barcodes of your items, pay within the app, and show the receipt to the exit greeter on your way out. It's been on iPhone this whole time, but now it graces us Android users. The bummer is that it is limited to the Rogers, AR store for now.