Like a TinyURL you wear, the p8tch is a velcro-backed "commando nerd" patch that you wear on your clothes. Or on your backpack, or your Pelican case, or your sashimono. The QRCode on the p8tch is configurable, redirecting to a URL that you choose. So you can point your p8tch to your RSS feed in the morning, then switch it to a PayPal "Donate" link in the afternoon when you go to visit your family and they all ask you for IT help.
You can scan the codes with a smartphone. iPhones will even pass off YouTube links directly to the on-board viewer, so you can do things like link your p8tch directly to a video of your scanner's MOM REVEALING THE END OF A CARD TRICK!