> Qrencode is a small command-line utitlity that allows you to create your own QR codes (saved as .png image file) for whatever you like – a blog, a secret message – whatever! via [How to create your own QR Codes in Ubuntu](http://www.omgubuntu.co.uk/2011/03/how-to-create-qr-codes-in-ubuntu/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+d0od+%28Omg%21+Ubuntu%21%29).