The four primary methods employed by facial
recognition vendors to identify and verify subjects include
eigenfaces, feature analysis, neural network, and automatic face processing. Some types of facial
recognition technology are more suitable than others for applications such as forensics, network access, and surveillance.
International Biometric Group
The
most comprehensive and up-to-date information on facial
recognition technology - the market, technology and
applications - can be found in IBG's authoritative report
on the "State
of Facial Recognition Technology."