thethe invention relates to a device (10) and professional and professional; customers; or a sim card (28) containing asim card reader (26), which is the data of the sim card (28) reads,pr & t.; fmittel(39) and professional and professional development; customers; thetechnical status of the sim card (28). the sim card reader (26)and the pr & t.; fmittel(39) are on and professional;a network (12) connected to each other.
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