Officials in China are saving money on toilet paper at public restrooms by creating facial recognition technology in several stalls across the country.
The machine uses facial recognition software to identify a user and vends exactly 27.5 inches of toilet paper, which is the maximum allowed by the machine. Here's a video of how it would work in person.
If a user wanted more than the allotted amount of toilet paper, they would have to wait 9 minutes before the machine would allow them to get another length of paper.
Apparently it has already reduced the amount of toilet paper used in half, but I at least hope it's the good stuff and not the single-ply!