Hi, is there a simple way/best practice to have a flow with some interactive step, for exemple if we have a step "download_data", and the data store in a google drive, we must use some two factor authentication to access it, how can it be achieved using Metaflow ?

you can authenticate with Google drive programmatically so that you don't need to go through an interactive oauth flow. These instructions seem valid You can store the credentials in your secrets manager and then use Metaflow's `@secrets` decorarator to access them securely This way you can read/write data in Google Drive like from any other data source in your Metaflow flow