Question Details

Answered
How can we identify users across different providers?

Dear everyone,

We've developing a web application using LINE login v2.1 with multiples providers.

We try to get user profiles by API https://api.line.me/v2/profile but for each provider, same user will have different userId. In documents LINE mentions

The user ID is unique only to an individual provider. The same LINE user will have a different user ID for different providers. Avoid using the user ID to identify users across different providers.

How can we identify users across different providers?

0
Profile picture
Tho (トォ)

Answers

1
Profile picture
こじ
Posted: 5 months ago

Hi. Unfortunately, there is no way to identify users across different providers. I guess it's from reason for security.

So you have to create each oauth applications in your unique provider. A unique provieder can have multiple oauth applications. if the provieder is same, uid is same, even if these are different applications.

Are you sure? question.vm