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This is Scientific American 60-Second Science. I'm Larry Greenemeier. Got a minute?

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Foldable white canes help the visually impaired navigate their surroundings.

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But the guide stick's tactile nature offers only so much information.

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The cane's user must manually find and avoid obstructions.

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But new high-tech canes are on the horizon.

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Last year researchers in India tried to fill in some of the missing info with their experimental SmartCane.

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The device uses an attached ultrasonic transmitter and a sensor that vibrates the cane to warn its users when an obstacle is within three meters.

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Students at the U.K.'s Birmingham City University are developing a cane that can even identify acquaintances as they approach.

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Called the 'XploR' mobility cane, it includes an embedded digital camera that analyzes the faces of people walking by and compares their images against a database stored on a memory card in the cane's handle.

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If there's a facial recognition match, the cane alerts the user's smartphone via Bluetooth.

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The phone then identifies the approaching person to the user via its speaker or earbuds.

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The students are building a prototype they'll test later this year.

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The hurdles are significant: facial recognition is a tough problem, especially outdoors.

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But if the XploR works, it could actually give the visually impaired a leg up on everyone else, especially those of us who never remember people's names.

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Thanks for the minute, for Scientific American 60-Second Science. I'm Larry Greenemeier.

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