I don't think gating on interaction does much of what they want, because they are trying to prevent cross-site tracking and it is quite common for people to int

I don't think gating on interaction does much of what they want, because they are trying to prevent cross-site tracking and it is quite common for people to interact with both sites. This is a mitigation that specifically addresses tracking that runs entirely on the client. If you set a cookie from the server the time limit does not apply, which means you can store whatever information you want on the server keyed by an HTTP cookie.