US Patent 9940571 Metal contactless transaction card

A transaction card for communicating data relating to a transaction may include a metal layer; a backing layer; and/or a radio frequency (RF) antenna layer positioned between the metal layer and the backing layer, where the RF antenna layer includes an RF antenna that may facilitate communicating the data relating to the transaction wirelessly via an RF signal, and the metal layer includes a plurality of holes to limit eddy currents in the metal layer to a threshold density, where the plurality of holes may extend from a top surface of the metal layer to a bottom surface of the metal layer, and the eddy currents may be caused by the RF signal.