Depends, what do you define as 5g? There’s multiple 5g frequencies.
There’s 5g that’s basically just 4g with some extra toppings (low band). I don’t really consider this 5g just because there isn’t any appreciable difference to the end user.
There’s the mid band which gets pretty good range, and much better speeds.
Then there’s the mmWave (high) bands which are VERY short range, but insane speeds.
But in cities basically all towers have been upgraded from 4g to the low band 5g. I almost never see my phone connected to good old 4g unless I’m way out in the middle of nowhere. (USA)
I’m suggesting that passive rfid is possible with transmitters, and there are 5g towers in lots of places, enough to track a person if a government was inclined. I see them every block in many city business centers.
Aa key trait of RFID is that it’s passive and only has a range of inches to maybe 5 feet. Even mmWave towers are typically out of that range, plus it needs active power. Tracking someone using their (actively powered) phones cell signal is incredibly easy, even with 4g. It’s shifting through all the data that’s hard and time consuming.
Identifying someone using 5g’s radio frequencies would technically quality as Radio Frequency IDentification. When people talk about RFID they’re typically referring to those passively powered key cards. Those key cards barely work when they’re an inch away from the object, let alone 5 feet away plus 0.5 cm of RF absorbing skin.
Depends, what do you define as 5g? There’s multiple 5g frequencies.
There’s 5g that’s basically just 4g with some extra toppings (low band). I don’t really consider this 5g just because there isn’t any appreciable difference to the end user.
There’s the mid band which gets pretty good range, and much better speeds.
Then there’s the mmWave (high) bands which are VERY short range, but insane speeds.
https://www.rfwel.com/us/index.php/5g-nr-frequency-bands
But in cities basically all towers have been upgraded from 4g to the low band 5g. I almost never see my phone connected to good old 4g unless I’m way out in the middle of nowhere. (USA)
OP is asking if it’s possible to track someone.
I’m suggesting that passive rfid is possible with transmitters, and there are 5g towers in lots of places, enough to track a person if a government was inclined. I see them every block in many city business centers.
Aa key trait of RFID is that it’s passive and only has a range of inches to maybe 5 feet. Even mmWave towers are typically out of that range, plus it needs active power. Tracking someone using their (actively powered) phones cell signal is incredibly easy, even with 4g. It’s shifting through all the data that’s hard and time consuming.
Identifying someone using 5g’s radio frequencies would technically quality as Radio Frequency IDentification. When people talk about RFID they’re typically referring to those passively powered key cards. Those key cards barely work when they’re an inch away from the object, let alone 5 feet away plus 0.5 cm of RF absorbing skin.
As I stated previously, toll booth rfid work at 20+feet and 80+.
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