Access user email address in Login with Blockstack integration

Support
#1

Hi,
I am developing the login with blockstack integration for an app “Prism”. In this app I require user to signup using their email address, so I am looking for a way to get the user’s email address when logging in through Blockstack (in the same way it happens with Facebook and Google login).
However at the moment I haven’t seen any way to access the user’s email address.
In my current login scenario once the user is logged in and I access the user’s data I basically get a JSON object with several fields (all of them empty) but there is no mention about the user’s email address.
I see there is a “Scopes” parameter I can set in the redirectToSignIn function, when requesting the user to sign in, but I don’t see anywhere in the documentation what value I can set for scopes.
Here is a screen of my “login with blockstack” implementation:

So, in short: is there any way I can ask for user’s email address when he is logging through Blockstack? And if so, how can I get it into my app?

Thanks,

Stefano

#2

Also, I am looking for a unique identifier for the user on blockstack (when the user logs in my app through blockstack).

Can you please confirm me that the field “userData.appPrivateKey” is a Blockstack unique identifier for the user on my app, so that the same value will be returned if the same blockstack user login in different sessions in my app?

#3

Apps currently don’t have the permission to request the email scope. But this is something we could potentially open up to developers. cc: @larry @ryan

You can use the appPrivateKey for this purpose.

#4

This is totally something we should do - I’ve opened a feature issue for this. It would be great if you could comment on it so that we have a better idea of the demand for this: https://github.com/blockstack/blockstack.js/issues/377

1 Like
#5

Thanks.
I have also added my comments to the issue on Github.