Print a simple card with your WiFi login details. Tape it to the fridge, keep it in your wallet, hang on the wall for guests at home or in the hotel, etc.
jQuery.qrcode is a jQuery plugin that enables you to dynamically add QR codes to your website. Choose between rendering the code in a
canvas or with
divs. The latter will be fine even for older browser. The generated QR code will be in the least possible version requiered to encode the content (least number of blocks).