During the sign up process, you might be requested to provide identity documents. These documents are required for the verification of your information (as mandated by the US Federal Regulations). As such, you will have* to upload the documents in order to successfully sign up and start using the app.
*In cases where additional confirmation is not required to sign up for the app, we will not ask you to upload your identity documents. This means that you will be able to sign up without uploading the documents.