Flat universal magnetic plug

This is an idea for a flat mains plug that will work all over the world. It's a well known problem having to carry a large universal adapter in addition to a bulky plug that very often exceeds the size of the device being powered. The plug is a flat disc with two thin flexible connectors that can be magnetized by a small flat rechargeable battery in the disc. Place the disc over the plug point generally aligning the connectors with the plug insert points, switch on the magnet, and the connectors locate the inserts and pull themselves into the inserts magnetically. The power recharges the battery at the same time ensuring it can be used constantly. Problems to be solved are an earth where required which could be done in the same way however very often the earth point is also an insert control mechanism which has to be pushed into in order to open the live and neutral points.