Open loop systems track the sun without physically following the sun via sensors (although sensors may be used for calibration).

At least, they couldn't find it via sensors.

Nail bombs can be detected via electromagnetic sensors and standard metal detectors.

The time between the gun and first kick against the starting block is measured electronically, via sensors built in the gun and the blocks.

The system is designed to be activated manually, or automatically via sensors along the road.

To predict fatigue, the device combines this profile with drive data that automatically registers via built-in sensors.

Heart rate is monitored via sensors that are built into the stationary handlebars or with an optional ear clip accessory.

The Web site www.nycmarathon.msn.com is set up to track each of the 30,000 registered runners, via sensors on their sneakers.

In fully mechanised welding, the information which is required for the weld quality is detected via sensors.