You no longer need to enter your login details manually. Just make your device fingerprint-enabled and you can simply activate biometric login in the app. You will then simply log in using your fingerprint.
After you enter your login details, you will see this screen. Just click on "AUTHORISE" and scan your fingerprint. The next time you log in, you will be logging in with your fingerprint.
You can additionally enable biometric login at any time in the "ACCOUNT" section and select "Biometrics" here.
Here you activate the biometrics function, enter your current account password and give "AUTHORISE". Then you just scan your finger and this activates the function.