What Did King Minos Use To Let Daedalus Come Out From His Hiding

What did king minos use to let daedalus come out from his hiding

 

Answer:

Daedalus built the labyrinth for King Minos, who needed it to imprison his wifes son the Minotaur. The story is told that Poseidon had given a white bull to Minos so that he might use it as a sacrifice