IP (Internet Protocol) account restriction

Just an idea but what if you could manage your account to only be able to be logged in on when you're on an IP that you have registered with your account. With Sony's playstation, this type of thing is use. What they do is that you can have your account set to up to 4 different systems. This is so that you have protection over your account and also to stop game sharing. However, I believe that an IP account restriction would help with account security since people put their credit cards on their accounts and also with all of the time spent on the game. They don't want their credit card stolen or all of the time they put into the game to all be gone. That's why I'd like to have a system that is controlled here on the website. Like how you change your password, etc. you go into you account management and select to log into my account on this IP. Then an email will be sent to you with a pin that you will have to type in and that IP will be saved. The reason I had this idea was because i got a notice that someone had logged into my account and I almost flipped shit because I thought "Oh shit what would they have done?". Let me know what you think.