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Microsoft Tag is an app designed to scan those funny looking codes that look like QR codes but have some color in them. These are Microsoft Tag barcodes and I found that some other laser reader apps don`t read them. This app works well for those so I have it on hand for when I want to scan one of those (which rarely happens)! Tag will keep track of codes you have scanned and you can save your faces. You can also share through Twitter, Facebook and other social network sites.
I like having this app in case one of those colorful little barcodes comes my way. It isn`t something I use everyday though but it was free so I keep it around.
Image Source: http://itunes.apple.com/us/app/microsoft-tag/id298856272?mt=8