[Jolijn]

Technology is not exactly known to be stagnant. What is not practical now could be in just a few years.

For high value targets, all bets are off anyway. Some nation states have virtually unlimited resources they can call on.

[PJDK]

Yeah, exactly. This is just a back door to phone tower triangulation, something every nation state has access to and uses regularly and publicly as part of normal criminal investigations.

[wongarsu]

But phone tower triangulation is only readily available to nation states on their own soil. For tracking foreigners tracking signal strength might be a useful alternative.