TIRED of hearing other people’s cellphone conversations? It may become worse. Soon you may have to watch their favorite television shows and YouTube videos, too, as they project them onto nearby walls or commuter-train seatbacks.
Pint-size digital projectors are in the works. These devices, when plugged into cellphones and portable media players, will let consumers beam video content from their hand-held devices to the closest smooth surface — entertaining themselves, annoying their neighbors and possibly contributing to a new warning sign: No Projectors in This Area.
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