Fingerprinting in iOS 14: where you can and can't use probabilistic fingerprinting for marketing measurement or tracking

Can you fingerprint users in iOS 14? Or, in other words, use probabilistic attribution? There’s been a ton of questions about this. Some vendors have said yes, and in fact there are some circumstances where fingerprinting is OK. But Apple has said fingerprinting is not OK in cases where people have not granted tracking permission. So what’s OK, and what’s not? We’re chatting with Eran Friedman, CTO of Singular, who’s been working with SKAdNetwork for the past six to nine months