It's not just an issue for humans. I often have the problem that touching my single board computer (ODROID-UX4) or plugging another mains powered device into it

It's not just an issue for humans. I often have the problem that touching my single board computer (ODROID-UX4) or plugging another mains powered device into it like a screen zaps it and causes it to fault and reset. I wonder if this is because it has a Chinese wall wort power supply with a UK adapter. Particularly, the Chinese two prong plug is symmetrical and fits the UK adapter in two orientations, so live and neutral are not differentiated.