Find the Story ID on the postcard.
The ID usually looks like CRP-BANFF-POSTCARD-7K29. It is not a tracking code and it is not a mailing address.
If the sender played Banff Lost Postcard on this browser, the original private story can open here. If the card came from another device, you can still confirm the arrival and start the next loop.
This page is for the person who receives the postcard. It explains what the Story ID can and cannot do in the first browser-local version.
The ID usually looks like CRP-BANFF-POSTCARD-7K29. It is not a tracking code and it is not a mailing address.