Technologies disclosed herein can be used to provide power and data to an implantable device implanted in a recipient, such as when the recipient is not wearing an external device. An example system includes a pillow or other headrest configured as a power and data source for an implanted medical device. Disclosed technologies can be configured to continuously provide power and data to an implantable medical devices over a period of time, such as substantially the entire period of time where the recipient is resting their head on the pillow.