The reason I put "in your wallet" inside scare-quotes the first time I mentioned it is that Bitcoin wallets don't really contain money. They contain a secret number, called a private-key, that can be used to prove you control some money (own some money). Anyone else who knows that secret number can take money "out of your wallet". from afar without any access to your wallet! Money isn't stored inside Bitcoin wallets but we go along with the charade because it is a useful shorthand that makes it easier to talk about Bitcoin. It is a useful way to explain Bitcoin to beginners even though it is misleading and unsafe.