Top 10 secrets casinos don’t want you to know

4. Security is probably watching you… for your entire stay.

If you’re in a casino, you can assume you’re being watched. “Casinos are very well-covered with surveillance cameras,” says Derk. “Once someone arrives at our property, if we needed to put together their movements over their entire stay, we could easily do so. We would be able to track their movements on the property just about wherever they went — except for like the bathroom and into their hotel room.”

Casinos generally use surveillance to look out for criminals who prey on tourists and the cheaters. And, yes, Derk says they can actually zoom in on your cards if they wanted to. So somewhere in the casino, in a locked, high-tech room, a security guard you’ll never see might be telling you to “hit.”