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Small, lightweight, hands-free cameras — worn on a headband, for example, or tucked over an ear — will record life’s memorable moments as they unfold, even if you are busy holding your infant son or erupting in cheers at your daughter’s basketball game.

The number of people using location-based services like Foursquare and Gowalla remains small, and does not appear to be growing, according to a report published Thursday by the Pew Research Center’s Internet & American Life Project.

On any given day, 1 percent of adult Americans use a service that allows them to share their location, according to the report. Four percent of adult Internet users use location-based services at all, down from 5 percent of Internet users who said they used such services in May. Only 6 percent of people who use social networking sites also used location-based services.

The Pew report notes how quickly technologies like these can go from obscurity to mainstream use. In August 2008, for example, 6 percent of adults used status-updating services like Twitter. By September 2010 that proportion had quadrupled.