Batphone for iPhone Points to the Possibility of Location Check-in by Sounds
The problem with social network check-in services is that they are not very accurate when you are somewhere without GPS coverage such as in a building like your home, office or shopping mall. Researchers at Northwestern University’s McCormick School of Engineering and Applied Science developed a very interesting technique that uses acoustic fingerprints to identify locations in areas where GPS location information is not available.
New ‘Batphone’ App Uses Acoustics to Determine Location
If you have an iPhone, iPod touch (recent model with a microphone) or iPad, you can test this for yourself using a free app developed by a graduate student working on the project.
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