If teleportation is moving an object to another location, then teleportation implies that you move an object faster than the speed of light and it therefor cant be seen.

But if not, it implies that you copy all the atoms/quarks, delete them and then "Paste" them (ctrl+x > ctrl+v) in another location making it not the same object, but a direct copy of it.

What would this mean to teleport a human being.. would this human be the same human that left spot A or would he/she be an copy. Would he/she become an exact clone without even knowing it?

I think the ctrl+x ctrl+v theory is more likely because if you move an object faster than light, how can you move it through walls and how can you calculate the destination?