http://cnet.com/update The online retailer tests a barcode-scanning wand for its grocery-delivery service. Also, Google Glass gets a Livestream app for live video broadcasts of your life.

http://cnet.co/1sosFvf Need it today? The same-day delivery wars are heating up: Amazon adds more locations and Google offers Barnes & Noble books, just in time for back-to-school shopping.

The just-launched online retailer promises the lowest prices, but is it better than Amazon? CNET’s Bridget Carey explains how the Jet.com shopping club works.