Go read William Forstchen's book "One Second After" about an EMP attack on the United States, and then ponder on whether you want a country like Iran to have warheads and missiles.
What you could do would be to use a special set of shoes with rollers or wheels mounted on the bottom. These could be read by optical sensors similar to the ones found in computer mice. All the computer would have to do would be to figure out which direction your feet were pointing in and read the speed of your movement from the wheels. They could have clutches so that resistance can be added, as well.
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Go read William Forstchen's book "One Second After" about an EMP attack on the United States, and then ponder on whether you want a country like Iran to have warheads and missiles.
What you could do would be to use a special set of shoes with rollers or wheels mounted on the bottom. These could be read by optical sensors similar to the ones found in computer mice. All the computer would have to do would be to figure out which direction your feet were pointing in and read the speed of your movement from the wheels. They could have clutches so that resistance can be added, as well.