To protect high-end secure data, you use more sophisticated techniques. The implants aren't any different from a retina scan or fingerprinting. They're all just different levels of security.
Right now, I cannot find my car keys, but I have my chip.
I have one. I'm not going to ask somebody to do something I wouldn't do myself. None of my employees are forced to get the chip to keep their job.
It's a passive chip. It emits no signal whatsoever. It's the same thing as a keycard.