I have a printer and I have children.
Sometimes curiosity overcomes reason, despite “I know it’s not allowed” - the child opens the printer’s door to see the printout (or worse - touch it, because it’s so interesting, colorful) and the printer, for example, is changing the filament, so it seemingly looks like a finished printout and safe.
There is an opening sensor in the X1/X1c taunts - maybe it could be useful for option in the firmware / on the LCD “child lock” - if the door is opened (or - if door state is changed) during printing, without unchecking “child lock” option on the LCD - some alarm is activated (and/or a notification in the mobile app) and the hotend heater is turned off, and the head is parked above the poop dump as the safest place In such a situation.