My 2016 Subaru Outback does not have keyless ignition.
My cousin has a 2014? Nissan Roque and it does have push button start (keyless ignition???).
Some of the wireless fobs have a way to shut off their operation, so that their broadcast signal is stopped and therefore the signal can not be copied. My cousin's fob for his Roque does not have a shutoff, so instead of buying the pouch to store the fob in, to block it's signal from being copied. he made up a pouch himself from tin foil and it works fine at blocking the radio frequency signal.