A smart toilet paper holder known as RollScout allows one to know when they are out of toilet paper before they sit down as it comes with an infrared emitter and sensor.
The emitter and sensor are connected and the holder pulses with a round amber light to alert unsuspecting bathroom users to the dire nature of the situation, CNet reported.
The 59dollars worth toilet paper can run for up to a year on a single A23, since it's designed to only "wake up" every few minutes to check on the roll for a split second.