Check in instruction code shared with previous guests URL

[Umar19]

Hi

I noticed that when I send out checkout instructions to guests it does it as a URL within the chat. Within those instruction steps I tell the guests the code to get into the building and once the guests checks out, I want to change those codes ready for the next guest.

My question/concern, when I update that code and change that on the check in instructions, does the previous guest have access to that updated code as it's within the check in instructions which the old guest can access with the URL?

Thanks