Patent ID: 8406760

Claim:
A method for using certain data acquired upon registration of a mobile communication device of a mobile subscriber of a cellular provider at a mobile service switching center, in particular for traffic forecasting, wherein the acquired data comprise at least a numerical identification associated with a person of the mobile subscriber and time and location of registration at the mobile service switching center, the method comprising the steps of: employing said numerical identification at least partially as an argument of a true one-way function or pseudo one-way function for calculating a functional value and using an additional code with the one-way function in the step of calculating the functional value; associating the functional value with the acquired data, especially the time and location of the registration; and transmitting the acquired data including the functional value but without said numerical identification to a unit using the data adding to said numerical identification additional digits determined by certain criteria, wherein said numerical identification with the additional digits is used as an argument in the step of calculating the functional value; wherein the one-way function or the additional code or the additional digits are changed in irregular intervals.