This hacked Polaroid camera prints your photos onto thermal paper: Digital Photography Review
Polaroid 5000 SE Sonar Auto Focus - Etsy
Polaroid Polasonic 4000 (aka One Step Sonar) autofocus instant camera – New Wave Pool
Film Gazing on Instagram: “Polaroid Sonar 5000 Autofocus (1978) The Polaroid Sonar Autofocus 5000 is an instant camera that possesses the same feature as the Pronto!…”