I was talking to RMS Rob and he mentioned that on the better bags (like Marsee) there's no problem with the magnets and credit cards or digital cameras, unlike the cheaper bags i.e. Joe Rocket, cause the magnets are coated in plastic.
I don't see how a thin coating of plastic would make a difference. I mean, the magnetic field is still there; otherwise how would the bag be fixed to the tank?
The plastic coating isn't so thick that the card is physically prevented from coming close to the magnet. I mean, its a thin coating....
Has anyone had any problems with their magnetic bags and their credit cards and/or digital cameras etc?
Before someone says "Do a search" I know there's a thread on magnetic bags and credit cards, but it doesn't specifically address what Rob claimed.