Yes, I restricted my husband's access to any funds and his credit card (in my name) has a monthly limit so if he gets scammed it will not be for too much. I can up the credit limit as needed if for some reason his expenses are higher than expected with a simple phone call. As his dementia progressed I have also limited the calls he can receive on his cell phone by restricting to his contacts only. Any other calls do not ring. That has greatly reduced my anxiety on worrying about scams.