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Both groups had the classic problem of notification -- getting a user to tune in requires interrupting their current activity, not something users have been known to relish. Billions were spent on Web School applications that assumed users would bookmark for a return visit, or would happily accept email alerts, but despite a few well-publicized successes like Schwab.com and eBay, users have mostly refused to "check back often."

We constantly rely on the cognitive capabilities of individuals in software design -- we assume a user can associate the mouse with the cursor, or that icons will be informative. We rarely rely on the cognitive capabilities of groups, however, though we rely on those capabilities in the real world all the time.

The suggestion about general web accessibility for the CoDeck interface came in the form of a rhetorical question -- "Why not make it as broadly accessible as possible?" In the Web School, of course, the answer is "No reason", since more users are always A Good Thing, but for CoDeck there were several good reasons for not simply turning their project into a Web video app. First, the physicalization of the interface, using the gutted BetaMax deck, provides a communal affordance that it is impossible to replicate over the web. Second, since CoDeck serves a tight community, the density of communication among ITP video makers would be diluted by general accessibility. Third, having the video deck in the lounge makes it self-policing; the cohesion of the community keeps it largely free from abuse, whereas a generally accessible and password-free "upload and critique" video site would become a cesspool of porn within hours. Finally, serving a local community maximizes use of free bandwidth on the local network, enabling features that would saddle a public system with crippling costs.

The taxi is outfitted with an interactive touch screen that displays video, animations, music, and information triggered by an onboard GPS (Global Positioning System) receiver which allows the displayed artwork to change depending on where the taxi is in the city. With the combination of the media/gps technology, the mobile environment and the passenger/audience inside the cab – the eleven artists in teletaxi are offered a unique set of possibilities for showing their work - both technically and thematically.