Some people with obsessive-compulsive disorder (OCD) experience a type of compulsion called compulsive counting. These individuals may feel the need to count objects, people, or actions.

Is it possible to count objects you can't see? If you've ever received a boxed gift, or a mysterious package from Amazon, you might have tried to lightly shake the box to try to guess its contents.

If you’re reading this, you’ve probably already mastered the skill of counting. But just because something is easy doesn’t mean it’s enjoyable, so the makers of a documenting-scanning app for ...