Poorly placed or ineffective QR codes can lead to consumer frustration. Here's how to use them to enhance--not embarrass--your brand.

Poorly placed or ineffective QR codes can lead to consumer frustration. Here's how to use them to enhance--not embarrass--your brand.

But it turns out you might not need an actual first class ticket to get into a swanky airport lounge—just a custom Android app that spits out a boarding pass-spoofing QR code.