The Faucet Buddy concept, developed by Baek Uyeol, is a water monitoring device designed to help users conserve water by telling them how much water is being consumed. Once fitted to the user's existing sink fixture, this conceptual device would provide feedback on the amount of water being used and its current temperature via a simple numerical display.

Sourced from Yanko Design blog: http://www.yankodesign.com/2008/01/15/faucet-buddy-tells-you-about-water/ (Accessed February 2009).