How do you send an automated alert to a security guard whenever anyone tries to climb a fence, but ignore anyone simply leaning on said chain link? How can a sensor pick up the presence of a Jeep but ignore a steady flow of gigantic airliners? Damned if we know, we're just bloggers, but a team at the USC Viterbi School of Engineering figured it out, creating what's called the Smart Fence. It's a series of sensors plus some associated circuitry that easily handle the situations described above and do so with amazing accuracy. How amazing? Here are the results of one test:
