"The designers reckoned after a few years, they might develop their own emotional responses. You know, hate, love, fear, anger, envy. So they built in a fail safe device."
"Which is what?"
Look at the last few images in this listing to see screen shots from the movie, along with a shot of it next to an image in the book "The Art And Soul Of Blade Runner 2049". If you are a Blade Runner fan, you will want this one of a kind piece for your collection.