A new type of magneto-optical card

Recording cards are widely used for date storage, laser cards and magnetic cards are very convenient, but the data rewriteable and high-density storage can not be compatible. The magneto-optical card has the advantage of high-density of laser recording and rewritable of magnetic recording. It uses the thermomagnetic principle to write data and the magneto-optical effect to read data, because of the no-contact reading/writing and the high-density of laser recording, the rewriteable laser card has potentially huge applications.