qrd.by (GeoTagger for QR Codes)
Enter a location and URL and the service creates a QR code that embeds the geographically location.
Putting it all together, let’s say you want to use the API to find Creative Commons-licensed 3D YouTube videos that are available in resolutions of 720p and above and are longer than 20 minutes.The following request URL will return a feed of such videos:
https://gdata.youtube.com/feeds/api/videos?prettyprint=true&v=2&license=cc&hd&duration=long&3d