The Water Lock is a conceptual device that allows you to easily limit how much water you use. The concept was developed by a group of students and professors from the National Taipei University of Technology. The device looks and works like a padlock. It fits onto your pipes and automatically blocks the flow of water when it reaches the limit you've set.
Conserving water is something everyone knows they should do, but few people actually take the time to turn off the tap when they're shaving or washing the dishes. This results in an immeasurable amount of water lost. A simple device like the Water Lock would make turning off the tap easy and effortless. The device is still a concept, but here's hoping that it becomes a reality soon enough.