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Our Technology is improving day-to-day life. We all well known about MIT. MIT researchers have warned that, just four phone calls are enough to reveal all your personal information. Massachusetts Institute of Technology found that, just four piece of information about the people is enough to identify their personal and other information's.

The researchers noted that, a simply anonymised data may not contain details of name, home address, phone number or others. They examined data collected over 15 months from 1.5 million people and found that "human mobility traces are highly unique".

They examined data collected over 15 months from 1.5 million people and found that "human mobility traces are highly unique".

"A list of potentially sensitive professional and personal information that could be inferred about an individual knowing only his mobility trace was published recently by the Electronic Frontier Foundation," researchers said.

"These include the movements of a competitor sales force, attendance of a particular church or an individual's presence in a motel or at an abortion clinic," they said.

Researchers noted that such personal data, whether supposedly anonymised or not, was increasingly available.

"All together the ubiquity of mobility datasets, the uniqueness of human traces, and the information that can be inferred from them highlight the importance of understanding the privacy bounds of human mobility," researchers said.

Artificial efforts to coarsen the data were found to have relatively little effect, they said.

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