Hearing instrument system

A hearing instrument system, comprising:

• a hearing instrument and a third-party device;
• said hearing instrument including:
• an input transducer for receiving signals being characteristic of acoustic events and for converting the signals into corresponding input signals,
• an output transducer for outputting output signals derived from the input signals,
• a controller configured to process the input signals and to generate the output signals from the input signals,
• a housing for housing said input transducer and said controller, and
• an LED connected to said controller for outputting optical signals and for receiving optical signals;
• said controller of said hearing instrument configured to derive information from an optical signal received by said LED and to use the information to continue to operate said hearing instrument;
• said third-party device configured to communicate with said hearing instrument through an optical data transmission arrangement using light signals;
• said third-party device forming a box-shaped charger having a charging interior for receiving said hearing instrument, and said third-party device configured to transmit a charging light signal into said charging interior;
• and
• said controller of said hearing instrument configured to take reception of the charging light signal as a basis for identification of said hearing instrument being disposed in said charging interior and for taking a measure related to said identification by deactivating at least one of a signal processing, a sound output or a sound capture or switching off said hearing instrument.