Mobile, social, location, sensor and big data technologies have made the possibility of truly contextual ads a reality.

FORBES: Why Can't Contextual Ads Be Contextual?

Unlike the emergency feature on your keyfob, which sounds a loud alarm and notifies potential kidnappers that you're a fighter, the Nokia phone pretends that it's off when it's actually using every available sensor to suck in data about your location and captors.

ENGADGET: Nokia's cellphone for kidnap victims

The Foveon X3 direct image sensor captures all primary RGB colors at each and every pixel location with 3 layers, ensuring the capture of full and complete color.

ENGADGET: Sigma DP3 Merrill packs a Foveon X3 sensor and a fixed F2.8, 75mm-equivalent lens

The Pioneer SmartCradle for iPhones is compatible with all GPS enabled apps, including MotionX-GPS Drive and is the first of its kind to incorporate a built-in gyro sensor and accelerometer combined with an external antenna for improved GPS reception and location accuracy, even if GPS signals are limited by high rise buildings and tunnels.

ENGADGET: Pioneer announces Aha Radio partnership, plans for app domination

Sensor proponents, however, argue that smartphones and corporate ID badges already can transmit their owner's location.

WSJ: Tracking Sensors Invade the Workplace

Sensor technologies can be combined with mobile devices to deliver ongoing monitoring and tracking, as well as GPS location and emergency communications.

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