A Belgian jail’s metal detector falters whenever attractive lawyers visit, allegedly because it’s too sensitive to the underwire in bras. To ensure they’re not packing guns, the lawyers are then asked to remove their bras to enter the jail.
These sandals use a copper coil in the right foot, connected by USB port to a base unit strapped to your leg, to find metal objects in the sand up to 0.6 metres away. In theory.
Someone did an application to detect metal using the Android G1. Is this because the G1 is more smartypanties than other smartphones? Is it magic perhaps? No, it’s a clever use of the built-in compass.