If I can't have a magnet anywhere near a machine, don't want that machine anywhere near me. Always have a magnet or two around to catch straight pins I flick out of my work while sewing. So, if they are plastic or there is a chance of erasing all the data, guess they ain't for me. Cute little machine though. ELectronic challenged here, would never figure out all them buttons. Give it 50 years and it will be a collectors item.