It seems there were/are a couple of workarounds for setting third party cookies in Safari.
One was to send a POST request in a hidden iframe using javascript. This was supposedly what Google used to bypass Safari's blocking of third party cookies[1].
Another is (was?) to redirect to the third party domain, and then back again[2]. This would supposedly work since the restriction on third party cookies doesn't apply to already visited domains.
One was to send a POST request in a hidden iframe using javascript. This was supposedly what Google used to bypass Safari's blocking of third party cookies[1].
Another is (was?) to redirect to the third party domain, and then back again[2]. This would supposedly work since the restriction on third party cookies doesn't apply to already visited domains.
1: https://stackoverflow.com/questions/9930671/safari-3rd-party...
2: http://www.mendoweb.be/blog/internet-explorer-safari-third-p...