Charge Plus currently holds the patent pending on the wireless charging  technology delivered in a standard credit card size receiver.

What is Wireless Charging?
Wireless charging (also known as Inductive charging ) uses an electromagnetic field to transfer energy between two objects. This is usually done with a charging station. Energy is sent through an inductive coupling to an electrical device, which can then use that energy to charge batteries or run the device.

Wireless chargers use an induction coil to create an alternating electromagnetic field from within a charging base, and a second induction coil in the portable device takes power from the electromagnetic field and converts it back into electric current to charge the battery. The two induction coils in proximity combine to form an electrical transformer. Greater distances between sender and receiver coils can be achieved when the inductive charging system uses resonant inductive coupling.

There are currently two major technologies battling for the standard of wireless charging, The Wireless Power Consortiums inductive Qi standard and the PMA standard. Both of these standards are based on inductive charging technology. The standard battle is not unlike the old battle between Betamax-VHS and the HD DVD/BluRay war that followed. 

The Charge Plus Cinch Card incorporates both QI and PMA technology.