How to enable Fingerprint Security in Whatsapp
With recent update WhatsApp enabled fingerprint security for opening and viewing the WhatsApp messages, though iOS had this facility from quite sometime. There are several third party apps and OEM user interfaces were providing this facility but having built in is most secured and reliable. In order to enable this facility you tap menu button by tapping three dots at top right edge > Settings > Account > Privacy > Scroll down > Fingerprint Lock > Enable by clicking right side button and also u can also select duration after which it seeks fingerprint verification.