Encoding URLs on your PC, then use your smart phone to scan and visit.
Encoding SMS or short text, and scan on your or friends' smart phone to watch.
Save QR Code as PNG photo. Pass it to your friends.
Simple and Reliable:
QR Code is a good function to pass short massages, but not for long article contents.
All in your local device:
No other extra and useless connections to hosting server. All process on your local device.
All information stays in your place. You can even use this to encode passcode or personal phone numbers with no worry.
But save or scan is on your own. Keep it safe as you can.
You can find all source code in this page.