Originally Posted by
global_happy_traveller
Being a first generation IACS user, I was told back then......
First check - By the airport authority that you are allowed restricted access into airside by matching boarding pass and passport. This is done by the airport security (Cisco).
Second check - is the smart card immigration to verify your identity (card/thumb print) and to log out as having departed Singapore.
Third check - is immigration program compliance, that a travelling passenger into/out of Singapore must have all their travel documents (IC, Passport, Work Permit, Employment Pass, Dependent Pass, Student Pass etc carried & valid).
Back in the days, ICAS was voluntary........
.
Definitely not that today. First check does not check p/p only boarding pass. Third check matches b/p and p/p, but does not check any other travel documents. No one has ever checked my Employment Pass when using ICAS. Ever.
Check 3 is usually repeated at gate, but not for all airlines. Always SQ. Never had it checked by Jetstar.