The Short Answer
Unless you are an experienced professional who treats DID/OSDD patients and has spent time with the potential system in session, YOU CAN’T.
The Longer Answer
Do people fake dissociative disorders online? Yes. Is it our (or your) job to weed them out? No. We’d rather accept a fake system into our fold than risk rejecting a real one. We think all people, systems or not, faking or real, deserve respect and a chance to prove they aren’t a total ass.
There is a lot of misinformation about these disorders, but it’s not our job to censor it or call anyone out. Instead, we choose to take the high road and provide our own life stories and information to combat it. You are welcome to join us.