I heard a heavy metallic thunk as my purchases slid into the steel tray near my knees. I pocketed the mace and put the flak vest on underneath my new shirt. Then I removed the Glock from its clear plastic blister packaging. This was the first time I’d ever held a real gun. Even so, the weapon felt familiar in my hands, because I’d fired thousands of virtual firearms in the OASIS. I pressed a small button set into the barrel and the gun emitted a tone. I held the pistol grip firmly for a few seconds, first in my right hand, then my left. The weapon emitted a second tone, letting me know it had finished scanning my handprints. I was now the only person who could fire it. The weapon had a built-in timer that would prevent it from firing for another twelve hours (a "cooling-off period"), but I still felt better having it on me.