| 摘要 |
PROBLEM TO BE SOLVED: To provide a user-friendly crime prevention system.SOLUTION: An electronic device comprises: a first detection unit that detects brightness; a second detection unit that detects sound; and a third detection unit that detects information for detecting a person in accordance with the detection results of the first detection unit and the second detection unit. The third detection unit may detect information for detecting the approach of a person. The third detection unit may have an infrared sensor. The third detection unit may have an imaging unit. The third detection unit may detect information for detecting a person when the first detection unit detects brightness equal to or lower than predetermined brightness, and the second detection unit detects sound volume equal to or lower than a predetermined value. |
