This is a free service to generate QR codes online for WiFi access QR codes (Android).
This is mostly just information from the wonderful Gina Trapani and her article on How to Make Your Personal QR Code read it for a more thorough take on the entire subject and great comments. I am mostly just saving the links to the generators so I can find them in a hurry.
A QR (“quick response”) code is a square barcode that makes getting URLs, location coordinates, any text or contact information onto a phone quickly. With a barcode scanner app installed, you just point your phone’s camera at the code to read its contents.
To find a scanner application, Google “QR Reader” and the model of your phone. There is a short review of them for an iPhone, the model I own, here at splitbrain.
This QR code generator can embed a URL, text, a phone number, or an addressed and ready-to-send SMS message into a QR code.
If you Google “QR code generator” you’ll find others, but beware of generators that force a redirect through their site when someone scans the resulting code and gets a URL.