A device that broadcasts an electronic serial number, or ESN, is made secure from cloning using one or more of a plurality of measures, including coupling the memory used for storing the ESN more closely to the ESN processor, fabricating the ESN memory as part of the ESN processor, including the ESN...http://www.google.fr/patents/US6167252?utm_source=gb-gplus-shareBrevet US6167252 - Security for a mobile or personal communications device having an identification code
Security for a mobile or personal communications device having an ...
