It is yours, but only others use it. What is it?

What invention lets you look right through a wall?

I have keys without locks although i free the soul. Who am i?

How can you fish a computer?

If you mention it, you break it.

What animals can jump higher than a building?

A book that has no cover but everyone has it and it is very famous. What is it?

You can find me in the cities, i'm tall and slim and i can stop you. What am i?

It always falls but never rises. What is it?

It goes through the city without any means of transport. What is it?