IMEI numbers, signal strength

miprom68 at miprom68 at
Tue Jul 26 13:00:34 UTC 2011

You guys are great. Next stupid question...

I've read a lot about how secretive and insecure GSM is, but nothing
about IS-95 (the CDMA 2G equivalent). Why not? It is more secure, or
do not many phones support it anymore, or does it not have enough
worldwide market penetration to be relevant?


On Sun, Jul 24, 2011 at 4:49 PM, mad <mad at> wrote:
>> Thanks! So, you're saying making an IMEI sniffer would not be easy?
>> Seems like it'd be easier to get just the IMEI numbers from all phones
>> in range than getting voice from just one.
> As I said, the phones are not sending their IMEI around all the time, it's not like a MAC in a LAN. Just at specific points (which can be rare) in their interaction with the network they send it out over an encrypted channel.
> Regards,
>  Mad

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