Experts have revealed a number of protection measures that every user of WhatsApp should take, including: Do not share the WhatsApp activation code because you are thus exposing yourself to a hack.
And WhatsApp Web enables you to access WhatsApp on your desktop by scanning a QR code with your smartphone, and if you use WhatsApp Web somewhere without logging out, others can easily open it and track your data.
You must open WhatsApp using Face ID or Touch ID, go to Settings, click Account, then Privacy.
Screen lock must be turned on with Touch ID or Face ID, and you’ll also be able to choose a length of time each time you use Touch ID or Face ID.
When you go to open the app, it will ask you for a photo of your face or a fingerprint to verify that you own the account.