A Personal Sonar Recorder (PSR) is a small device used to record its surroundings, up to a radius of twenty feet. It maps an area with a rapid procession of directional sonar pulses. The captured data is sent via optical cable to an image processor for interpretation. The resulting images are relayed to the viewer as a near-realtime video feed and serve monitoring and recording purposes.
Impractical without a miniaturization process that allows for hardware implantation in the user’s body, PSRs have become a luxury available only to the wealthiest of private citizens.