Latest phones are great at thwarting Wi-Fi tracking. Other devices, not so much – study

Boffins find increasing MAC address randomization protection with mobiles

In 2017, US Naval Academy researchers found that MAC address randomization in mobile devices was largely worthless as a privacy defense. Three years later, the same research group took another look and found that while there's been meaningful improvement, many phones still fail to effectively prevent MAC address-based tracking.…

from The Register