Nationally there have been several stories of people discovering a small video camera in their short-term rental. The fact is those cameras can be anywhere.

"You can buy video cameras that are placed in alarm clocks. You can have two way mirrors that you can have a video behind. You can let your mind wander about where all the places a video camera can be," said Dale Dixon, with the Better Business Bureau.

Dixon says the best way to protect yourself is to be aware of your surroundings. When you walk into a room, look around closely.

"What's plugged into the wall? How many devices are sitting around?"

Again, it can be tough to spot a hidden camera. So Dixon suggests you go a step further and get a hidden camera detector if you want to ease your mind a bit more.

"I get in a hotel, do a quick sweep, and look for radio signals and camera lenses," said Dixon.

He says anything that's transmitting a signal is going to alert the device. You can find them online just by searching for "hidden camera finder." Dixon says make sure you look at reviews.

If you are in a vacation rental or hotel room and pick up a signal from the detector and discover a hidden camera, Dixon says don't touch it but do report it.

"Just take a picture and send it to the company responsible for putting you in that space and say, 'listen, I found this snooping device and I'm not comfortable staying here and I want a refund,' and then leave the premises. That's really safest and the best thing you can do for yourself," said Dixon.

Vacation rentals can have cameras, but they must be disclosed to renters by the host and they can't be in a sensitive place like a bathroom.

Hidden camera detectors cost about $20.