Talking Paper was oddly similar to CueCat. A recorded message up to 50 seconds long is printed onto a photo or postcard as matrix barcode. The recipient runs a handheld reader gadget over it, which plays the message.
There doesn’t seem to be much information to be found about it; the video was uploaded to Mimo’s 808Crate on YouTube and shared on social media.
from Boing Boing https://boingboing.net/2018/11/09/a-1990s-talking-paper-tech.html