Thinking about using Airbnb for your next vacation? Worried about hidden cameras? A new survey found that if you've been dismissing the stories about hidden cameras as rare cases, you might want to think again. The survey of more than 2,000 Airbnb customers from Investment Property Exchange Services, found that 11 percent of them said they'd found a hidden camera in their host's home. And while just over one in 10 had found a hidden camera, a majority of 58 percent said they worry about it. About 25 percent said they didn't mind cameras in common areas. Airbnb policy bans hidden cameras in private spaces like bedrooms and bathrooms, and hosts must disclose any surveillance devices in their listings.