Ah thank you. And yes, it is physical. So like tying strings on you and stuff.

Cool.

Just to explain: As for the brainwashing. It's more like, he abducted you, brainwashed you and then you don't remember he ever did that to you. And it's a needle. The moment its inserted, you forget about it. It works like a micro chip. It activates only when he needs it too. So in canon, he used it to make certain people do missions for him which were very simple in nature, whilst making sure they aren't obvious while doing it.