It's Not a Just Pad

I want to make some kinds of pad. It appearance are similar with mouse pad. But it is not a just pad. When you just put the electronic devices on the pad, electronic devices will be charged. If we use this item we can charge many devices at once. Also we don't have to plug in each of them for charge. Basic theory of this item is electromagnetic field and electromagnetic induction(전자기 유도). First, you turn on the pad, inside of the pad makes electromagnetic field. Second, that field cause the electromagnetic induction of the devices. Finally, devices will be charging. It can help all of electronic devices users. I think it will be cheap because it has no reason to be expensive. Surely it will be used worldwide and everyone loves it. It is convenient, cheap, design is beautiful. So I hope someone make this product to us or later I wil make that product.