Picto-recorders are small camera-like tools that are used to record motion pictures onto discs for easy playback.
“With a sudden inspiration Terl reached down into the car and grabbed the picto-recorder. He aimed it in a sweeping circle, letting it grind away. He’d send his folks a spool of this. Then they’d believe him when he said it was one horns-awful of a planet and maybe sympathize with him.
“‘My daily view,’ he said into the recorder as he finished the sweep. The words rumbled through his mask, sounding sad.” (Part 1, Chapter 9 Battlefield Earth)