Even before the latest terrorist attack in London, casinos on and off the Las Vegas Strip have stepped up security.
At the Westgate hotel-casino, technology can actually identify weapons on anyone, even if the person is moving.
The device is hidden in door frames and walls. As soon as someone walks by with a weapon, it will immediately alert police and security personnel of a potential active threat.
The radar will also take a picture of whoever just passed by with a weapon and send it to security and law enforcement.
Security has also been enhanced at Steve Wynn's casinos on the Las Vegas Strip.
"There's a division in the Marine Corps of special people that are specially trained to guard the embassies," Wynn told 13 Action News in September. "That's a whole division with separate base, separate training. There are almost 40 of them at every opening of my building, plain clothes, armed, on the look-out, changing shift and being relieved every two hours so they don't get bored."