Mobile dating websites, in order to increase the opportunities for meeting, focus attention on users that share the same social network and proximity.
Some companies even offer services such as homing devices to alert users when another user is within thirty feet of one another.
If there is a match, then both users are alerted and can seek each other out and directly chat using Bluetooth (bluechat).
Settings can include an option which restricts alerts to subscribers who have a friend in common.
D student who was the first author of the study at the University of California Sand Diego's Jacobs School of Engineering, said the technique could be far more secure than Bluetooth networks.
Sony SRS-XB40 has a built-in multi-coloured line light, speaker lights and a flashing strobe.
They say the technology, called magnetic field human body communication, uses just a fraction of the energy needed to send data over Bluetooth links and could also be more secure as it does not broadcast the information outside the human body.
John Corpuz flip-flopped between computer science and creative writing courses in school.
Subscribers to the service enter details about themselves and about their ideal partner, as they would for other on-line dating services.
When their mobile phone comes in the vicinity of that of another subscriber (a radius of about 10 meters) the phones exchange details of the two people.
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