Today’s invention is a washing machine which detects things other than clothes before these items get washed (and destroyed).
Each item of clothing has its barcode scanned before being inserted into the washing machine. The machine weighs each item by taking note of the weight on board before and after addition of each.
Later, when say a shirt is inserted, if the weight fails to match the recorded weight for that particular piece of clothing, a small alarm sounds to indicate the presence of your phone, loose change, pen, keys, calculator, passport, etc.
