networking - Can the MAC address of a mobile device be easily determined? -

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this of general question, realistic assume router can resolve mobile device's mac address without being connected via wifi or bluetooth?

if device broadcasting, or if it's connected access point, capturing wifi data allow capture device's mac address. routers aren't set listen in way, , don't think simple configure kind of behavior.

in general, if device isn't connected wireless router/access point, aren't going able capture mac.


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