That sounds incredibly high at such an early stage in the research - but only tests on vast quantities of real people, rather than eager volunteers, will present any real test.

Questions remain, however, as to how secure the system is. The machines could reveal health conditions like heart murmurs and breathing problems as well as stress levels - which would be an invasion of privacy.

Questions remain, however, as to how secure the system is. The machines
could reveal health conditions like heart murmurs and breathing
problems as well as stress levels - which would be an invasion of
privacy.

Or, one's naturally hostile state of mind, which is no less a matter of privacy...

Thoughtcrime, here we come. Great.

What if someone is just in a very foul mood?

So let's say someone sees a cop push someone around and suddenly thinks "f*$#% pig!"...

http://clipmarks.com/clipmark/DB4965F5-57F6-49C8-8944-C10618BD90B5/

We, the people should use this on them!!

Making us believe these numbers is part of the method.