A Japanese researcher has developed a biometric that could be used to protect a car from theft: butt biometrics, according to verge.com.

Shigeomi Koshimizu, an associate professor at the Advanced Institute of Industrial Technology in Tokyo has developed the technology. A seat pressure map to generates 39 indices that are used to uniquely identify a subject’s posterior. Results so far have been encouraging, with average false reject rates of 2.2% and false accept rates of 1.1%.

Biometric like facial recognition and fingerprinting can be dependent on environmental factors, however, Koshimizu hopes to leverage the relatively unchanging nature of the human buttocks to improve accuracy and lower the burden on the end user.

Other applications are also envision, Koshimizu sees the technology used in offices to automatically log in to a computer.

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