Possible Clues:

• Printed material difficult to replicate
• It's not easy to reproduce printout
• It's not easy for police officer on Fourth of July to printout
• Key work included by author that's printed out
• Not easy to trace printout
• Printed version
• Not easy being on PC with variable printout
• Tough policeman with ponytail is perhaps a touchy-feely bookish type
• It's printed from computer to paper
• White Paper perhaps suggests it's not easy finding policeman from Yard