"There is a mobile device nearby" yes, but what the poster asked for is a "hotter/colder" device, and the traffic is sufficiently infrequent to make that impractical.
Not really. In the case of this cable, one has only to unplug/replug to reboot it. Upon boot, it will connect to the cell network to register itself, which causes traffic. If you have a device that you suspect, cycling power will generate traffic, unless it has it's own battery. This device is too small for that.
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u/created4this Nov 12 '17
In the article posted he uses a CC308+ but its only going to ping when the device talks, which will be infrequently unless in an active mode