Answer:
Die without me, never thank me. Walk right through me, never feel me. Always watching, never speaking. Always lurking, never seen. What am I?
What has keys but no locks a space but no room and you can enter but can't go in?
With a halo of water and a tongue of wood; stone as skin long I stood.
I follow you all the time and copy your every move but you can't touch me or catch me. What am I?
Although it sounds like I work on a transportation device I actually work in a restaurant.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?