Dropbox has announced another security measure to protect your data. The statement says “Once you have a key, go to the Security tab in your Dropbox account settings and click Add next toSecurity keys. Currently, U2F is only supported for dropbox.com using the Chrome web browser. Signing in from a device or platform U2F isn’t supported, or don’t have your key on hand? Don’t worry — you’ll still have the option to use two-step verification through text message or an authenticator app.” This will be enabled for two-factor login.