Speeding up airport security checks depends upon airlines ability to work together and with the TSA.
TSA Limited By Airlines In Trying To Speed Airport Checks (Manila Bulletin)
TSA has relied on airlines to nominate PreCheck candidates from among their best customers. Because not all airlines participate, and some consider frequent-flier information secret, a passenger qualifying under one airline can’t use PreCheck if flying another carrier. Agency officials said they don’t have the technical capability now to create a clearinghouse that might resolve the roadblock.