To get Google account password, go to https://myaccount.google.com/apppasswords. For Select app choose other and when you are asked for name, write anything. Then copy your password and use it in password: field.
Keep in mind that you will be able to see your created password only once.
Hi
Could I suggest adding instructions to the documentation for how to get the App Password.
From https://github.com/klejejs/ha_keep_notes_sensor
Keep in mind that you will be able to see your created password only once.
Thanks Greg