Взять "биллинг" — так на профессиональном сленге называется получение информации о соединениях абонента сотовой связи с представлением информации о входящих/исходящих вызовах, СМС-сообщениях, IMEi – кодах телефонов, использовавшихся с этой сим-картой (и наоборот), определение местонахождения владельца телефона с привязкой к конкретной станции (вышке) в интересующий промежуток времени.
http://blog.fontanka.ru/posts/136045/
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