This is where people put fake number plates on their vehicle so that if they're photographed by one of the thousands of speed cameras operating in Britain, they don't have to pay the fine because the camera's photographed the wrong number.

NPR: The Marketplace Report: U.K.'s Car Tracking System

And consumption is further reduced by adjusting the operating speed and voltage of the chip on the fly, depending on the user's activity.

ECONOMIST: Transmetamorphosis

Also, considering the speed of evolution of mobile device features and operating systems, evolving field requirements, ongoing maintenance of multiple platforms can cost multiple times the initial development budget over a five-year period.

FORBES: A Five-Point Checklist For CIOs Looking For A Mobile App