Pedrayes has an easy hack that’s free: “If the camera has infrared technology, you can use the front-facing camera on your phone or computer to scan the room. Make sure the lights are all off and it’s dark. If there’s a camera, you’ll see a big spotlight on your phone, and then you can walk up to it and inspect it further.”
Pedrayes recommends testing this technique before you leave home. Remote controls use the same infrared technology as cameras. So, point your remote at your front-facing camera and see if you can see the light. If it doesn’t work with your phone, try your laptop camera.