What I need: Facebook accounts that I can use for 30 min. without being bothered by phone verification. Afterwards, I'll leave them to exist but don't need them anymore. What I do: I use Tor, grab a new identity, clear browsing data, put it on private browsing, create a gmail account and create a facebook account. This works 2-3 times a day without giving me the phone verification directly. My problem: After 2-3 created accounts during a day, I get phone verification directly when I create a new account. So somehow facebook manages to track that I've created a new account even though I'm trying hard to cover my tracks. What does facebook do? And more importantly: how do I avoid it? Solution: Should I use CCleaner? Or am I missing something else?