Bellagio officials wouldn't say whether MGM Resorts properties are among Las Vegas casinos that embed radio frequency devices inside the tokens.
Police say it took less than three minutes for the robber to pull off the heist.
The bandit entered a casino entrance from Flamingo Road, strode fewer than 500 feet to a craps table, brandished the handgun at the 10 to 12 patrons and three or four dealers with chips piled on the green felt, scooped up the loot and ran.
Casino security officers didn't confront the robber, but a ceiling security video camera followed his path out the door. Morgan said a 911 call was placed to police while the man was still in the casino. He was gone by the time police arrived. 11