Whatsapp does have the option to add a password to your account: http://www.androidpolice.com/2016/11/10/whatsapp-enables-two-step-verification-can-now-play-aud

Whatsapp does have the option to add a password to your account: http://www.androidpolice.com/2016/11/10/whatsapp-enables-two-step-verification-can-now-play-audio-messages-background/ http://www.androidpolice.com/2016/11/10/whatsapp-enables-two...