Wireless fences, also known as "pet containment," are one of the most remarkable accomplishments of the modern age. An enhanced collar provides negative reinforcement encouraging dogs to remain in their yards. I'm intrigued by the untapped human applications. I'd be a much better person if I could program one for myself. If I tuned in to American Idol I'd immediately get hit with a painful jolt of electricity. When I whine about my knee hurting- zap! If I get too close to a fast food restaurant- pow!