When you gotta go, you gotta go, but there may be a line in public restrooms. Usually those lines don\u2019t have anything to do with surveillance. Let\u2019s hope a new biometric authentication trial in China doesn\u2019t roll out here, or else you would have to stop in public bathrooms in front of a device that uses facial recognition and wait for your allotted amount of toilet paper to be dispensed.Too bad, so sad if the 24-inch strip of toilet paper isn\u2019t enough. The dispenser will not spit out more paper to the same person until after nine minutes have passed.Why would this creepy type of surveillance be deployed in public restrooms? To combat toilet paper theft.Beijing's Temple of Heaven Park has installed six $720 facial-recognition toilet paper dispensers after providing free paper in its public restrooms for 10 years. Numerous reports say toilet paper is not provided in most public bathrooms in China, so free TP is a luxury.Apparently, Temple of Heaven visitors \u201clack paper use manners.\u201d A China Radio International report cited a temple toilet cleaner at the UNESCO World Heritage Site as claiming that \u201csome people take much more paper than needed and sometimes even take a whole roll away with them; sometimes paper is used up in only 20 minutes.\u201dA Temple of Heaven Park manager told\u00a0The New York Times that the toilet paper thieves were local residents, not tourists. NBC News was told the thieves are \u201cmiddle-aged and old people, who come to the park regularly.\u201dThe company that designed the automated facial-recognition paper dispenser told the Times, \u201cWe brainstormed many options: fingerprints, infrared and facial recognition. We went with the facial recognition because it\u2019s the most hygienic way.\u201d People can be issued more TP after nine minutes because that is when the facial recognition image is automatically deleted.The park has a plan if a person is sick and the allotted strip just won\u2019t cut it. The BCC quoted a park spokesman as saying, \u201cIf we encounter guests who have diarrhea or any other situation in which they urgently require toilet paper, then our staff on the ground will directly provide the toilet paper.\u201dFacial recognition machines cause confusion, delaysThe machines were installed at different heights, the average height for men and women. There have already been problems with the high-tech toilet paper dispensers. The face scan is supposed to take three seconds, but can take up to 30 seconds. That has reportedly caused confusion and delays.The Guardian reported that the park had to first post attendants in the restrooms to explain how the devices worked. Lines to be issued paper and then use the restrooms have been backed up due to the park being one of Beijing\u2019s busiest tourist destinations.\u201cIn some case the machines broke down completely, forcing bathroom staff to manually distribute toilet paper\u201d and \u201chopefully remember the faces of each person.\u201d the publication reported.The park first tried putting up signs about responsible toilet paper use. It seems both crazy and creepy that now in order to get paper, a person must \u201cstand in front of a high-definition camera for three seconds, after removing hats and glasses, before a 60cm ration is released.\u201d\u201cIs there not a solution somewhere between \u2018put up a sign\u2019 and \u2018install the sort of thing Bond villains use to secure their secret vaults'?" asked American historian Jeremiah Jenne in The New York Times article.