Stickybits lets you add a barcode to a physical object. When someone then scans the barcode, using an iPhone or Android phone with a stickybit app, they can see what you and everyone else has tagged to the object.
Stickybits provides a few examples of how you can use the service. For example, attaching a video to a birthday card, attaching a resume to a business card or attaching photos of a product to a flyer.
The stickybits website includes a real-time stream of scanning activity. The page includes a Google Map which shows the locations of the latest stickybit activity. There is also a stickybit API which seems to be calling out for a developer to produce a Google Map tracking the locations of objects tagged with a stickybit barcode.
Tales of Things - tag real world objects, follow them on Google Maps and Twitter.