There are many biometric safety procedures and screenings that are carried out. These security procedures or inspections are commonly seen at airports, passport agencies and departments, and places such as the British Council, among other locations. Biometric safety measures and screenings are carried out using a variety of approaches. The following are some of the most prevalent methods:
Recognition of Finger Geometry
Voice Recognition for Users
live scan service Fingerprinting 
Retina Recognition in the Iris Eye
Recognize signatures
Recognition and Identification of Faces
Geometry Recognition in Handprints