While you’re at it, you can also place a security freeze with ChexSystems by Googling “ChexSystems freeze.” Many banks and credit unions check with ChexSystems when they receive an application for a new bank account. If you have a security freeze with ChexSystems, identity thieves won’t be able to open bank accounts in your name at those banks and credit unions. When you need to open a new bank account yourself, you can temporarily unfreeze with ChexSystems. It goes back on freeze again when you’re done. Freezing and unfreezing with ChexSystems is also free.