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2
votes
0answers
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GSM mobile messages with the first octet 01000000

In GSM networks, it is found that there are so many mobile phone messages (uplink) with the first octet 01000000. For example, the 28-octet message ...
1
vote
0answers
39 views

Possible to use Cellular encryption data to validate Geolocation?

I need offline-verifiable, time stamped, GPS signals or its equivalent. Since cellular protocols include time stamps, encryption keys and other data, perhaps it's possible to re-use this ...