Auth using redirect URI seems like a bad idea !!!

[Jovaini1]

using google & Facebook providers make it harder to redirect to my app
i suggest using the native API that provides from google or Facebook (The famous google Alert dialog )

[muratdoglu]

This SDK is useless.

[ChiragAgg5k]

you can read more about why redirect uri s are used in oauth2 flow here - https://www.oauth.com/oauth2-servers/redirect-uris/