Although late, it seems that Meta finally made the sensible choice to follow up on what other messaging platforms have offered for a long time – multi-device login support.
Started rolling out to selected users and to the rest of the world in the coming weeks, users will be able to link up 4 devices at once so that no sign-outs are required from this point onwards. All personal messages, media, and calls are still end-to-end encrypted.
The underlying mechanic works in the form of a single primary device (which would be the one that you daily drive the most) with the rest being companion devices. To safeguard user privacy or unattended access, WhatsApp will automatically log out of all companion devices should the primary device go inactive for a long time.
Additionally, those running WhatsApp Business accounts will be able to reply to customers through companion devices under the same account name and business banner.
Lastly, you will soon be able to access WhatsApp web through a one-time code in addition to the existing QR code scanning method. Truly convenient for those who just can’t scan QRs for whatever reason.