You should be vigilant when it comes to QR codes, but don't be afraid to scan them.

Amazon will start rolling out its own version of QR codes, TechCrunch reports. Called SmileCodes, they function just like a typical QR code -- scan it with your phone and see where it leads -- but ...

The codes are essentially like the QR barcode squares you sometimes see on advertisements and magazines, but these also feature Amazon’s smile logo in the center.