Hi percysmith.

The slips I've encountered have all been carbon slips on the machines which I believe are Global Payment machines. The Italian Restaurant at Harbour City thing was in 2014 during Xmas, and the machine looks very identical the ones I've encountered at Hermes and LV and so forth, with pearl-like buttons and a detachable wireless pinpad, printing out carbon copies.

On those machines, I can always get a currency confirmation slip if I insist. It is printed on the same kind of carbon slip, and it needs no actions from you, not like the "signature and DCC slip".

The restaurant printed the same kind of currency confirmation for me and they told me what they use is Global Payment.

If you've seen the DCC slips which I believe you have, they contain both local currency HKD and home currency. However the confirmation slips only contains HKD amount and have no mentioning of DCC.

It is like:

1) DCC slip, circle HKD and sign
2) Asking for a currency confirmation
3) Cashier inputs currency selection (so it is not forgotten, very important part that they don't simply just forget about it)
4) A second slip showing only HKD amount

Also at Tsui Hwa, I've seen machines printing out only the slips with HKD amount. It's like DCC is disabled by default on those machines. They print out carbon copies as well.