Robert Hettinga forwards:

By concentrating sensing and data storage on the body, a wearable computer allows its user to ``control his own butt.'' The user determines when and where his gas is released and how much to trust the noses around him. For example, when a wearable user enters work in the morning, he may instruct his butt to inform his office of his arrival so that his office locks his door or starts an air freshener. However, the user would probably tell his wearable not to share his odors with billboards he walks past to avoid the sort of targeted advertising portrayed in the film ``Minority Report.'' Of course, some bargain hunters may choose to share their gas with advertisers to obtain better deals, much like clearing out customers from today's grocery stores.

What the hell does this have to do with cypherpunks?