Correspondence Table

[Marcus Vinicius Souza]

Hello, guys!

Please, I need to understand the following question:

How do I know that someone logged into Google at some site is a user of my application?

Thanks.

[Josh Radcliff (AdWords API Team)]

Hi,

Is this for the purpose of targeting those users? If so, I'd recommend checking out the remarketing section of the AdWords Help Center. We also have a Remarketing Guide that covers how to set up remarketing lists using the API.

Thanks,

Josh, AdWords API Team