Correct, or another way to put it, opening your front door and allowing anyone who happens to pass by to come in. I have read the most modern cases of possession are the result of “playing” with a Ouija board or some other method of communicating with the dead.
Time and time again I have seen Ouija boards bring about demonic activity. The idea of the Ouija board is of ancient origins in many countries and was banned in some of them, probably for good reason.