Why we need to signin in Google Chrome

When you sign in to Chrome, your Chrome settings on that computer are saved to your Google Account. When you sign in to the same account on another computer, Chrome makes your saved settings available on that computer.

Recover your settings and data, such as bookmarks, apps, extensions, themes, etc. if your computer is lost or broken. Simply sign in to Chrome again to bring them back.

Any changes you make to your browser settings will be synced to the account you've used to sign in to Chrome. Changes you make on one computer are automatically reflected on the other computers where you're signed in and have enabled sync.

To keep your information secure, synced data is encrypted when it travels between your computer and Google’s servers. As an added layer of protection, by default your saved passwords are encrypted on your computer and on Google’s servers using a cryptographic key. You also have the option to encrypt all your synced data. You can remove your synced data from your account at any time, using the Google Dashboard.

You can then load these settings anytime you use Chrome on other computers and devices.