US Patent 9606680 Capacitive communication between stylus devices and computing devices

A stylus device is disclosed that enables a computing device to communicate to the stylus device using a capacitive link. In an aspect, the stylus device detects a change in an electric field generated by the computing device. A message including data is received from the computing device via the change in the electric field. The message may include an identifier corresponding to a data encoding scheme to be used for sending data to the computing device. Based on the identifier, the stylus device may configure itself to operate using the data encoding scheme.