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Maybe not today, but with better sensors and neural networks I'd say anything is possible.
That's not what's bothering me most in the long run though. Because there's no way in hell they'll be able to resist the temptation to manipulate our brains directly if they ever develop the capability.
Technology is neither good nor bad, but it enables better and worse with every iteration.
I studied biomedical engineering, it's really difficult to get anything useful out of a human brain non-invasively even if you are Apple. Neural networks are not magic, they can't do much with such low SNR.
"You may be surprised to learn this is a future that has already arrived."
To the original poster: what of your own direct experience and knowledge has convinced you that this is an imminent threat?
If Google, for example, had announced this, the median response would be closer to your take.