Sometimes we interact with strangers for the sake of courtesy. But we’ll never know what kind of stranger we run into.
Metal Detector Free, is an app created for such purpose. Whether in school or in public places, one will never know this kind would come in handy.
MetalDetector is an app for iPhone and iPad. It uses the magnetometer to measure the magnetic field
when the iPhone is placed near a feromagnetic metal like iron or steel.
This application is not compatible with the iPhone v1 and 3G. Though this is not entirely successful, at least it has potential. Who knows? Smartphone giants would want to add this in their hardware components in addition to heart rate monitor.
Download MetalDetector here.