A hair extension device that allows a user to add supplemental, natural, human hair strands to the natural hair of the user. One example includes the low-friction coating on selected portions of the one side of the sliding fabric layer. Each stereographic image comprises a first of said multiple images acquired at a first location and a second of said multiple images acquired at a second location which are temporally spaced apart in the series one from the other. The apparatus comprises an alternative host port and a hub circuit operatively connected to the host connector, the slave connector, and the alternative host port. The content includes at least one content item obtained from a first resource and at least one second content item obtained from a second resource different than the first resource.