I was reading in the Metro newspaper the other day about QR codes.
basically, for those that are not aware of them, they are a square block and contain data which can be read by a barcode reading app (on my phone, its called Barcode Scanner V3.53 - available free from the Android market)
This was generated by using a free website
http://qrcode.kaywa.com/
Now its been saved to my computer as a jpeg and can be printed onto paper, labels, keyrings etc.
What I was thinking would be to lay a trail, with QR codes, hidden away like a standard cache, but with the QR Code leading to the next link, or for it to log on to the cache website to allow the user to instantly log their visit.
The beauty of the printed code is that it can be laminated to prevent damage.
Or even printed onto a sticker and stuck to a surface.
A second option would be to have this in the form of a sticker on the inside of a standard cache, again for the finder to be able to quickly log on and upload his find.
What are peoples thoughts on this?