I also don’t mean to defend Apple, but isn’t this the same idea behind that children’s game where you levitate a ball with your brain, combined with a fitness band? None of these readings can be used to interpret your state of mind.

Although if they are able to use them in concert to detect something like a panic attack, I would welcome the technology from a more health-focused device. I can think of multiple instances I would like to have bad mental times softened with a warning, especially now that I know paracetamol helps dampen mental distress.