Migrating Android app from OpenID 2.0 to Google+ Sign-In -



Migrating Android app from OpenID 2.0 to Google+ Sign-In -

i have both web app , android app offer google openid 2.0 login option. in process of migrating them google+ sign in, since openid 2.0 deprecated.

for web app, next migration process described here, add together data-openidrealm attribute sign in button. result, when login completed, id_token includes openid_id field, containing user's openid 2.0 identifier. can utilize determine whether user has business relationship on site.

for android app, intend implement google+ sign in using signinbutton widget, described here. however, don't see alternative equivalent data-openidrealm attribute. how can openid_id value can recognize existing openid users when login?

i know seek match users email address, not result in perfect matching, , users unable access existing accounts. know implement openid connect straight (which allow passing openid.realm parameter), instead of using signinbutton widget, not of user experience, , google discourages it.

so google offer migrating android app openid google+?

android google-plus google-oauth google-openid

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