Star Trek's Mr. Spock and Captain Kirk never even lose pocket change when they use a transporter to get from TV's Starship Enterprise to distant worlds. What gives? Paramount Television/The Kobal Collection hide caption

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As the Apple Watch goes on sale Friday, it's unclear if the gadget and others like it can attain the utility and prominence smartphones have in the past eight years. Ryan Emberley/AP hide caption

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Outfitted with two color cameras that run on batteries, the PillCam Colon capsule is being billed as a less invasive and less expensive option to a colonoscopy. Given Imaging hide caption

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Google co-founder Sergey Brin wears Google Glass glasses at an event on the University of California, San Francisco's Mission Bay campus on Feb. 20. Jeff Chiu/AP hide caption

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The iGrill on display at Macworld 2011in San Francisco. Tony Avelar/Bloomberg via Getty Images hide caption

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