I couldn't decide from the published info if medical devices were exempt. Things such as insulin pumps and neuro-stimulators, which tend to work automatically and have no manual controls. In any case, not sure how you could prove the insulin pump was working without special test gear, and you would not wish to give the user an extra dose of insulin only to have him go into a glycaemic reaction 800 miles out.......
Although I always liked the 'switch off all electronic devices for take off and landing'. Can't always be done - pacemakers, for example, and turning off a hearing aid would be very dangerous. Obviously not thought about by those who wrote the briefing script.....