Radio towers are designed to emit radio wave, not receive. You need some kind of device which can pick up super weak radio wave from human body, that’s more like a pinpoint directional radar. Such devices simply can't work on multiple people at once.
It has already happened.
Mark my words.
Nah. According to this article, it takes MRI scans of the brain. I don't think that there is remote MRI imaging available...yet.
powerful enough radio towers or ungerground cables could be emitting Mri frequencies to map the local environment
Radio towers are designed to emit radio wave, not receive. You need some kind of device which can pick up super weak radio wave from human body, that’s more like a pinpoint directional radar. Such devices simply can't work on multiple people at once.