Even the ones that are digitized will often force the people requesting to get it from a print out. A lot of this is because the systems they are pulling the background check data from are required to be CJIS compliant.

The problem is that the FBI is the primary warehouse of criminal history information and every time anyone is arrested they look it up in the FBI database. Then they take a lot of information out of that database and enter it into their local database. In exchange for access to the database the counties (and law enforcement) are subject to CJIS Security Policy which is basically the FBI swinging its dick around telling them what to do, one of which includes severe restrictions to any system that contains CJI Data including their local one.

The FBI audits yearly, and if they find that you have set up a public for the terminal for the public that has access to the local system, they will strip the county/agency access to the FBI database immediately. It also isn't on a piece of information basis, they literally just dictate the rules to all sub systems that contain any CJI data. It doesn't even matter if they're accessing a totally different record type.

The only way to properly digitize access is still basically reports in PDF or data exports (spread sheets), but you still are just giving people the digital equivalent of printouts.