Use Google prompts to confirm logins on a mobile device

Two-factor authentication (2FA) makes your accounts more secure. For a Google Account, confirming each new login via a prompt is one of the safest and most convenient 2FA options. Once you enable the option from your account page, you can confirm or deny login requests from your mobile device. On Android, these prompts come from Google Play; on iOS, they come from either the Google or Gmail app.