Mobile Client Device Wireless Charging, Communication, and Authentication Techniques

Mobile client device wireless charging, communication, and authentication techniques are described. In one or more implementations, a method performed by a mobile client device includes establishing wireless communication with a substrate having an integrated electromagnetic inductive coil in accordance with the mobile client device being at a distance proximal to the substrate to achieve an inductive connection. After establishing the wireless communication, the method includes receiving wireless inductive power from the substrate, establishing communication with a device via the wireless communication with the substrate, and after establishing communication with the device, operating, via the wireless communication, as a user input device for the device by outputting a user interface on a display device of the mobile client device, the user interface being operable to receive user input for the device.