Ringtone Demo
The QR code below contains a link to the following file:
http://qrdemo.com/ringtone/ringtone.midi
You can take a photo of this code on your phone with the QRMidlet application installed. You can then directly access and download the above linked midi-file from within the QRMidlet application.
Your cellphone must support storing of midi-files and setting midi-files as ringtones for this demo to function properly.
Accessing and downloading above linked midi-file on your cellphone requires data transfer over your cellular network. Your cellphone must be set up for data transfer over your cellular network for this demo to function properly. Depending on your cellular network service provider and contract, your cellular network service provider might charge you for this data transfer.
The above linked midi-file was created by Mario Mattioli and licensed under a Creative Commons Attribution-NonCommercial 2.5 license. Found at the ccMixter website.
Possible Applications
Referencing multimedia content with QR codes could be used for promotional purposes or to augment print materials with multimedia content. Many modern phones support downloading and playback of ringtones, MP3s, videos, as well as small Java applications.
Movie ads could feature a direct over-the-air download link for a trailer and concert posters could offer promotional ringtones or MP3s. You could also put a QR code containing a direct link to your contact details in vCard format on the back of your business cards for convenient importing into a phone's address book.