In the not too distant future, the homes of elderly people might be outfitted with
sensors that can detect if they are up and moving around, have taken their medicine
or received a visit from a friend.
In the United States every year, close to 800,000 people suffer a stroke – a sudden
interruption in the blood supply of the brain. Many are left with a dragging foot.
But doctors are working on an inexpensive way to fix their footing.