If a heart beats too slowly, the device will use electrical signals to help set a normal rate.

VOA: special.2010.06.29

Because of that, we moved to AITs -- advanced imaging technology -- to provide security screeners with a better opportunity to detect whether or not somebody is trying to smuggle, again, something concealed on themselves, concealed in what would be a normal device or in their luggage.

WHITEHOUSE: Press Briefing

He successfully implanted his device in normal rhesus monkeys without disturbing their hearing or sense of balance, and he was able to spark the vestibular system so that the monkeys' eyes moved as if they were spinning.

FORBES: Magazine Article

They claim normal users using a Qwerty keyboard on a touchscreen device were limited to typing at a rate of about 20 words per minute.

BBC: KALQ thumb-type keyboard takes on Qwerty