Hi,
Once you open the ISIS, you can use the internal ISIS code to claim a key.
The real pyramids, currently hidden around the UK and part of Europe, are locked, you need the key to open them. The real pyramids will be released in the US this year, so it's a good idea to claim your key as soon as you open your ISIS, so that you don't have to wait for the post once the pyramids are released
I think you also need to prove that you have a key in order to claim a prize from a virtual Pyramid.
I don't want to post a picture of the key here, as I think that's better suited for the 5% club. If you are in the 5% club, you can request a picture there
Karen
Opened: ISIS 1, ISIS 1A, Eagle ISIS, NK, NK Tut, Kuku
Key out: Ramisi5
Unopened: ISIS 1B, ISIS 1C, Ramisis