Hey guys,
There is an offer I really want to run on Facebook. But it specifically requires me to pass the GAID/IDFA of the visiting device, I know the token {device.id} on
Thanks!
I’m 99% sure you can’t although no doubt someone will be along and correct if I’m wrong 
Those 2 parameters are only obtained through the apps via SDK (ios or Android). If you are advertising on mobile web, you are out of luck. If you are advertising on Facebook App then perhaps facebook is providing you with those 2 parameters (I am not sure).