Patent attributes
Systems are provided to emit, into an environment of interest, information in the form of modulated optical signals. These optical signals can be provided as illumination from a lighting fixture, display, or other source of environmental illumination. The optical signals can include codes or other information to facilitate location-specific operations of a device that is able to receive the optical signals. This can include receiving information about the location of a light emitter, security credentials or encryption keys, information about services that are available from building automation and/or conferencing systems, or other location-related information. A cellphone or other device receiving such optical signals could then operate to request information related to the received information, to submit commands to control a presentation or conferencing system, to communicate in a secure manner using a received cryptographic key, or to operate in some other way related to location-related information received via optical signals.
