Imagine a coffee cup sitting on a table. Now, imagine a book partially obscuring the cup. As humans, we still know what the coffee cup is even though we can't see all of it. But a robot might be ...

A robot that follows its owner like a pet, runs errands, and steps forward like a bodyguard to fend off threats is a so-called ‘user-following robot (Follow-Me Robot).’ In parts of China, ball-shaped ...