QR code are short version of long text. You can send long link or encrypted text to your girlfriend, so your wife doesn’t read unless until she know how to scan QR code. : ) Scaning QR code is easy, but for that you need to have and application for that. First code is for http://www.letmebuzz.com and second code is for: ???? (Leave in comment)
Red Laser is wonderful application for that. It is used to scan almost any bar code. For instance, you can scan food items, book or even QR codes. So, go to android market place and search for red laser. It is completely free application and it is also available iOS app store as well for free. Download it and install it on your device. Open app and scan code. it will read whatever is encrypted in that small QR codes. Scan second code and let us know what is written.
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