I use 2FA on everything I can (gmail, Amazon, etc). There are a couple of options with 2FA, but it sounds like you want to use an app. Are you using Android or an iPhone. If you use Android, just download an app like Authy or Google Authenticator and add your account (gmail, Amazon, your bank or whatever). It will give you the option to scan a QR code when setting it up. Then when you want to login, you need to enter an additional piece of information that makes it far more secure. Your bank/gmail or whatever will prompt you for a security key. That can be obtained by launching your authenticator app that you installed and configured above. You launch Authy and choose Amazon (for example) and it gives you a security code to key in. Note: Think of 2FA as one of those RSA security keys from back in the day. Every 60 seconds, it would refresh the code and allow you to login to your VPN or whatever it was you were using. Authenticator apps on your phone do the same thing. They refresh every 30/60 seconds. Also – DM me if you run into issues.