Don't let this gadget go down the toilet

Japanese startup Triple W Japan has developed a wearable device designed to give a little piece of mind to anyone who worries about unpredictable bowel movements.

Worn on the stomach, the DFree predicts the timing of bowel movements by using an ultrasonic sensor to scan activity in the bowels. Data is sent via Bluetooth to a mobile phone app, which then notifies the wearers before they even get an inkling that they will need to use a bathroom.