> anything you've used to convey that information can also make a copy of that information That's true of a general purpose computing device, but sadly those a

> anything you've used to convey that information can also make a copy of that information That's true of a general purpose computing device, but sadly those are becoming rarer and rarer, at least as a percentage of all devices. (I suppose in some technical sense the device conveying the information is necessarily making a copy of the information at least temporarily, but there is no need for that copy to be persistent or retrievable at the request of the user.)