methods in a mobilkommunikationsnetz to receive position and zeitinformationen on users

摘要

The method is for obtaining location and time information about users. A digital content is first created which is stored in a user terminal. Location data is then retrieved from the user terminal. Either or both of the location data and the digital content are digitally signed in the user terminal. The signed content and location data is combined and the combination is time-stamped by a trusted third party.