Smart toilets are capable of identifying users through what researchers call an “anal print.” While the concept may sound humorous or even uncomfortable, the technology is being developed with serious medical intentions.
Scientists, including a team from Stanford University, are designing toilets equipped with cameras, motion sensors, and artificial intelligence to monitor a person’s health during everyday bathroom visits. These devices can analyze urine and stool samples automatically, checking for indicators such as blood, abnormal consistency, infection markers, hydration levels, and other early signs of disease. The goal is to transform a routine activity into a passive health-monitoring system that requires no extra effort from users.
Because multiple people may use the same toilet, researchers needed a reliable way to match health data to the correct individual. Their unusual solution involves scanning unique patterns in the perianal region—similar in concept to fingerprint or facial recognition technology. According to researchers, these anatomical features are distinct enough to identify individuals accurately.
Proponents argue that this innovation could help detect conditions like kidney disease, gastrointestinal disorders, or even certain cancers at earlier stages. Continuous monitoring may provide doctors with more consistent data than occasional clinic visits, potentially improving preventative care.
However, the idea has sparked mixed reactions. While some people are intrigued by the health benefits, others express concerns about privacy, data security, and the awkwardness of biometric identification in such a personal setting. Developers emphasize that any collected data would be encrypted and handled with strict medical confidentiality standards.
Though it may take time before such toilets become mainstream, the concept highlights how technology continues to merge with healthcare in increasingly unexpected ways.
