Fingerprint Authentication for WhatsApp is on cards for all android users.

WhatsApp to Soon Get Fingerprint Authentication on Android

As per the report WhatsApp will soon have fingerprint authentication in build within the app.

For now we all using third party app to protect its users' chats from being seen by others. As per this new feature, authentication, once enabled, will be required for users to open the app.

The Facebook-owned instant messaging service was recently reported to bring a similar feature to iPhone as well, supporting two biometric authentication methods - both Face ID and Touch ID.

According to WABetaInfo, a fan site that tests new WhatsApp features early, the feature is current under development, and disabled by default in the Android 2.19.3 beta version.