Butt Recognition

  • (2011 Dec) Engineers from the Advanced Institute of Industrial Technology in Tokyo have developed a novel biometric automotive anti-theft system that uses the unique shape of your butt to identify you.
  • The driver’s seat is fitted with 360 sensors that measure pressure according to a scale of zero to 256. Each reading is plotted to create a 3-D image — essentially a topographic map of your ass — used as a personal identifier.

  • The Car of Tomorrow Recognizes Your Butt (Wired)

  • (2020 Apr) A mountable toilet system for personalized health monitoring via the analysis of excreta / Park & al / Department of Radiology, Stanford University School of Medicine (via Nature biomedical engineering) (local copy for the records)
  • Abstract
    Technologies for the longitudinal monitoring of a person’s health are poorly integrated with clinical workflows, and have rarely produced actionable biometric data for healthcare providers. Here, we describe easily deployable hardware and software for the long-term analysis of a user’s excreta through data collection and models of human health. The ‘smart’ toilet, which is self-contained and operates autonomously by leveraging pressure and motion sensors, analyses the user’s urine using a standard-of-care colorimetric assay that traces red–green–blue values from images of urinalysis strips, calculates the flow rate and volume of urine using computer vision as a uroflowmeter, and classifies stool according to the Bristol stool form scale using deep learning, with performance that is comparable to the performance of trained medical personnel. Each user of the toilet is identified through their fingerprint and the distinctive features of their anoderm, and the data are securely stored and analysed in an encrypted cloud server. The toilet may find uses in the screening, diagnosis and longitudinal monitoring of specific patient populations.

    The fingerprint sensor is located on the flush lever, and well, the camera, you guess it. Called "analprint" in the paper.

    So now, it's no more an hoax!