The survey aims to count the total number of Beijing residents and to correct false household registration information and provide accurate information for the sixth national census.

入户调查的目的是摸清人口底数，纠正户口登记项目中的差错，为第六次全国人口普查登记提供准确的基础信息。

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"It is estimated that the total number of police staff hours spent investigating Ray Gosling's false report is in excess of 1, 800, " said Mr Clements.

BBC: 's Ray Gosling sentenced for wasting police time

When a human wearing the EEG cap was introduced, the number of false alarms dropped to only five per hour, out of a total of 2, 304 target events per hour, and a 91 percent successful target recognition rate.

ENGADGET: DARPA threat detection technology uses a camera to see targets, software and soldier brains to identify them