I thought HK has no chip and pin - see for example orreck and Rainbow.

But I just saw a visitor use a non-HK HSBC visa in Page One near HKG gate 60, no signature even tho the transaction was HK$328 (small ticket transaction in HK is $200)

Also DCC was asked for, and a selection (the visitor chose HKD) was keyed in. Compliant.