Flying cars were always a pie-in-the-sky proposition, but hologram calls and many other bold tech ideas have hit snags.
The State of Tech
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5 innovations that may lead to 'next big thing'
Consumer technology has lacked a wow moment recently. But flexible screens and four other promising advances could eventually lead to cool new devices.
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Buying stuff with your phone: Not coming soon
You'll never have to wait in line again, security will be baked into your credit card, and signing for purchases will become a thing of the past.
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For sale: Your personal info
Your smartphone holds a treasure trove of information about you, and cell phone companies are looking for ways to turn that into profit.
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Black, female, and a Silicon Valley 'trade secret'
How diverse is Silicon Valley? Most tech companies really, really don't want you to know, and the U.S. government isn't helping shed any light on the issue.
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