I have a handful of 'rare earth' super magnets somewhere. They are the size and thickness of a penny coin each. When I find them I will just slide one of them in that slot in the cover for cards etc and hold it there using super glue. I am sure magnet does not have to touch the screen. A strong magnet at the right spot would activate the switch. The magnet I am using now is an ordinary affair with less than remarkable strength. Even that works without actually touching the screen. A thin magnet in that card slot would make the whole contraption invisible. Fancy Kobo are asking for £40 for a sleep cover!
|