Duo Security has a tested module for OS X: https://www.duosecurity.com/docs/duounix https://www.duosecurity.com/docs/duounix This doesn't help at all for Apple

Duo Security has a tested module for OS X: https://www.duosecurity.com/docs/duounix https://www.duosecurity.com/docs/duounix This doesn't help at all for Apple ID, though.