Some technologies are tools, others are toys, and still others are attitudes. A case in point is the 7280 cell phone just introduced by Nokia. The 7280 is the size and shape of a candy bar. It's unusual not so much for what it has -- a built-in 640-by-480-pixel camera and voice recognition -- but for what's missing. The work of Nokia's Mobile Phones Business Group, the 7280 has no keypad at all. Numbers and names are entered by voice only and are displayed on-screen at a fraction of the size of those on conventional instruments. If less is more, the price is nice, too: about $600 retail.

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