Hello,

I would like to write a google gadget that can automatically authenticate the user with the credentials that he has already used to sign on to google. For example:

user logs into google with a username and password

he clicks on my gadget

my gadget somehow finds out his username plus some kind of authentication token

from my gadget i call another google api with this token to verify that his identity is correct (i.e. hasn't been faked)

is there any way of doing this ? I couldn't see anything obvious in the API documentation