| 摘要 |
The method involves generating a request by a user, and automatically generating a list of mobile phones or persons (1) associated with the mobile phones at a time point, where the list represents intersection between the telephones and/or persons. The list is maintained at a selected location, and the list is registered in a mobile radio network. The telephones and/or persons determined at earlier time point are stored in an electronic database that is accessed over an Internet, where the selected location is described by position and surface area.
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