Comment by kevcampb

I just discovered this treasure trove from the UK house of commons in 2006

https://publications.parliament.uk/pa/cm200506/cmhansrd/vo06...

"To extend that to adults, The Guardian journalist Ben Goldacre showed recently that someone needs possession of another person's mobile phone for only a couple of minutes to appear to give the consent required under mobile phone companies' current procedures. The person he was tracking never got any of the warning messages that were meant to have been sent to her. Even more scarily, a hacker's website has recently published information telling how to spoof consent without even having to have temporary possession of the target's phone; all that is needed is the number. If someone has a person's number, he can track them. It is not a problem. I know where the website is, but I am not going to tell Members. It is possible to track people just through their phone numbers."