Google GLASS is a pretty exciting smart wearable device. Unfortunately, it is way too expensive for everyone to try it now. Nevertheless, there are many cool apps available for it. Tesco’s shopping app for GLASS certainly looks interesting. It allows you to order products that you need by scanning barcodes with your GLASS. Not all large retailers have their own GLASS app, but this could potentially make life easier for many of us. I’d personally love to get my hands on an Amazon shopping app for GLASS.