Which is hardly a good solution I like to troll friends on the server by locketting their spawn and making it many layers so they can't /jump out Supercoolio knows
Also, don't forget you can use [timer:x] to automatically close doors behind you. The sign would look something like: [Private] blaqDeaph [timer:1] which will close the door 1 second (roughly) after you opened it. Also useful for making autoclosing doors without redstone. If you want just the autoclosing door without blocking anyone, then add [Everyone]