User blog comment:Eobard95/Is Earth-2 Dr. Wells really Eobard Thawne/@comment-3221148-20160513111333/@comment-3221148-20160513111639

Instead, you should have noted that Harry specifically called his Time Vault chamber a Time Vault. This is something Eobard has created for himself, in secret, being a time traveler, so even if, by coincidence, Harry just maide a similar braile-covered room, why would he call it a Time Vault if it's just a simple closet?

So either Harry is a time traveler, or a researcher of time travel and specifically speedforce time travel on the level that he still hasn't explained (yet hinted) to the audience.