PA is a stop and ID state.

 https://www.legis.state.pa.us/cfdocs/legis/LI/consCheck.cfm?txtType=HTM&ttl=34&div=0&chpt=9&sctn=4&subsctn=0

TITLE 34

GAME

§ 904.  Resisting or interfering with an officer.

(a)  General offense.--When an officer is in the performance of any duty required by this title, it is unlawful for any person to interfere with or resist an arrest, inspection or investigation of the officer by threat, force, menace, flight or obstruction. A violation of this subsection is a summary offense of the first degree.

(b)  Failure to produce identification upon demand.--

(1)  A person who refuses to provide identification upon demand of an officer whose duty it is to enforce this title after having been told by the officer that the person is the subject of an official investigation or investigative detention, supported by reasonable suspicion, commits a summary offense of the fifth degree.

(2)  A person who provides false identification to an officer whose duty it is to enforce this title for the purpose of avoiding prosecution or hindering apprehension or obstructing an investigation commits a summary offense of the second degree.

(June 23, 2004, P.L.434, No.42, eff. 60 days; Oct. 7, 2010, P.L.474, No.64, eff. 60 days)

2010 Amendment.  Act 64 amended subsec. (b)(1).