I had an idea, and it's about a stethoscope. Wherever you put it on the body, you can listen in on…words. Particularly, verbal English that corresponds to where you place it. You can get status reports, orders, etc. wherever you put it. Put it near the heart(like you normally would with an actually stethoscope,) you get how the heart is doing and such. The liver, kidney, even the brain. I had some ideas with it, like how it responds to diseases or injury. This is the sort of one where you get escalation of test logs, starting out with, say, looking at the heart, then you get the brain, injured limbs, bacterial infections, viruses, or perhaps even cancers.
So, what'd you think?