The ability of devices and AI to decode thoughts is advancing rapidly. Scientists at the University of Technology Sydney (UTS) achieved over 40% accuracy in early experiments with a thought translator called DeWave AI. You have to wear a special cap for it to work, but as time goes on I'm pretty sure AI will get better at surveilling our thoughts without the need for that.
As this article explains, this is a whole new field of law and human rights, that is barely keeping pace with how fast the technology is developing.