Set up multiple passkeys
The WhatsApp settings screen for passkey management.
PCWorld
Passkeys can’t be stolen, duplicated, or cracked, which is why they’re superior to passwords or PINs when implemented correctly. So they’re resistant to the kinds of social engineering attacks commonly used to hijack WhatsApp accounts.
WhatsApp has now expanded its passkey support to allow multiple per account if you own both Android and iOS devices. One device must be on Android, the other on iOS. It’s worth doing, just in case something happens to the main device you use. Having a backup passkey lets you back in instantly, with zero hassle.
Create your passkeys by heading to Settings > Account > Passkeys.
Set up two-factor authentication

The WhatsApp two-factor authentication settings screen after activation.
PCWorld
WhatsApp doesn’t use a traditional password login, but its new upgrade to its two-factor authentication system feels close.
Previously, you could safeguard your account by creating a six-digit PIN—even if someone tried add a linked device (or just outright take over), that numeric string was needed to see chats and other content or finish logging in.
Now WhatsApp requires a full password (mix of letters and numbers, with special characters also supported). Existing PIN users can upgrade to a password.
Click Here For The Original Source.
