Originally Posted by
wilp888
I am pretty sure that once you have used both a foreign passport and a HKID to enter Hong Kong, both travel documents are linked in the government database. I usually use my HKID to enter Hong Kong but a few years back, I left my HKID at home and so I used my U.S. passport to enter HK.
When you apply for an ID for the first time, you need to show a passport, so they become linked. But if you are born a HKer and subsequently get a different passport, (or change nationality after getting your HKID), I am not so sure they just match it up.
However I don't see the point since the visitor queue is always so long... and if you are non-citizen permanent resident then the consular protection thing still applies anyway.