It's a self-restraint thing. People need to not use them constantly, and they'll be fine.

That's why we're putting out the warnings because of the potential to have problems are out there.

People tend to use just one finger over and over again and it's that repetitive use with one digit that could lead to problems.

(Laptops) have the tendency to flare up tendons more, (cause) neck pain. With the screens attached to the keyboard you are always looking down.

If they're playing these from 10 to 18 [years old] and then going into the workplace where they're on a computer eight hours a day, what's going to happen? As children, they've had all these little micro-traumas. Is it going to carry over?