Tagtracker Tagtracker software runs on your camera phone. It acts as a gateway between physical objects and the web. You request a marker and mark your territory with it. 'territory' could be your office, your t-shirt, your business card, or anything physical. A 'marker' is a unique two-dimensional bitmap grid which associates with an online resource: a website, a forum, a weblog, a wiki, a corporate intranet, a sales catalogue, exhibition piece information. Visitors to your territory - or people that see your tshirt, or peel your marker sticker from their car window, can use the tagtracker phone software to connect to the associated website and discover more about that object. owner history, contact information, life object metadata (prices, availability, technical documentation), forums about the object, links to previous people with direct experience of the object provide extra content for people visiting venues, build communities of ex-visitors, exchange business cards visually, create marker-hunting games, tile your bathroom to encode its own website The phone application turns a cameraphone into a 'magic lens' through which it can be used to locate, identify and connect to markers. Standard GPRS or modem dial-out features are used to communicate and collect information. No custom hardware or services are required. The internet becomes a geographic, physical-world based resource. Discover communities local to your regular haunts, discover resources by taking a stroll, join in with groups you have physical contact with, email people you see in the street. For further information, to request a marker, or download the application, please visit http://daveatron.com/tagtracker/