olemus
biomeetria, mis liigitab, kuid enamasti ei individualiseeri; biomeetrikuteks on eemalt eristatavad välistunnused, näiteks kasv, sugu, nahavärvus, juuste värvus
= biometrics that classify but mostly do not individualize; biometric characteristics are external features that can be distinguished from a distance

ülevaateid
https://en.wikipedia.org/wiki/Soft_biometrics

https://www.intechopen.com/books/machine-learning-and-biometrics/a-survey-on-soft-biometrics-for-human-identification

http://biometrics.cse.msu.edu/Publications/SoftBiometrics/JainDassNandakumar_SoftBiometrics_SPIE04.pdf

http://www.comp.hkbu.edu.hk/wsb17/slides/Terence_Sim.pdf

http://vbn.aau.dk/files/219488771/on_softbiometrics_preprint.pdf

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3418766/

https://www.southampton.ac.uk/~msn/soft_labels/Dan_Reid_PhD_Thesis.pdf

https://eprints.soton.ac.uk/359808/1/version9.pdf

https://eprints.soton.ac.uk/363288/1/tome%2520tifs.pdf