Do you have a smart phone?  Have you noticed that little barcode reader app in the App Store?  Well, I did and, honestly, I had no idea what I’d use it for but I downloaded it anyway.  Hey, I figured it’s free so give it a try and if I hate it ~ no harm, no foul.  I heart it!  It’s probably one of my most played with apps. I use it when I’m shopping and I can’t find the price on something, scan it with the barcode reader and voilá there’s the price.  Or if I run across a book and I want to find out information about it,…