I carry mine in my wallet right behind my drivers license so that if stopped by the PD for any reason when he asks for my drivers license I hand him both my license and my permit, it takes any surprise out of my having a firearm on me. When they see the permit it usually stops them from doing further inquiry into your records because they already know you are one of the good guys and that your background is clean, which mearly cuts down on the time you may be detained. (it's also gotten me out of a few speeding tickets).