You could write a letter or a declaration under penalty of perjury that attests to the person's residency. Basically the title.My fiancee and I are moving to Philly next month and Im planning out how we can seemlessly swap licenses to PA. To meet the PA residency requirements for driver's license, you must show two forms of proof of residency in the state. Download a proof of residency letter template for family members, notarized or non-notarized, tailored for legal use.