← All 3DS flows
Hotel / Resort Website (top level)
3DS flow:
Navigate OPI frame
. OPI's own frame is redirected to the ACS; the component state is lost. The OPI return page then reloads OPI with the transaction. This page only embeds OPERA.
Embedding attributes (applied to hotel → OPERA and OPERA → OPI iframes)
allow="payment *"
sandbox
without
allow-top-navigation
OPERA frame height
px
Reload page
Apple Pay / Google Pay in cross-origin iframes need
allow="payment"
on every ancestor iframe.