Modern smartphones come equipped with versatile hardware and sensors that can double as personal security tools. A recent guide from Engadget outlines practical methods users can employ to locate hidden surveillance cameras in hotel rooms, rental properties, and other unfamiliar environments.
One common technique relies on the phone's camera to spot infrared (IR) illuminators used by night-vision cameras, which emit light invisible to the naked eye but often detectable on a smartphone screen. Additionally, using the device's built-in flashlight in a darkened room can help reveal lens reflections concealed within everyday household objects.
Beyond optical checks, mobile devices can also scan local Wi-Fi networks to identify connected recording equipment. Dedicated network-scanning apps can flag suspicious IP cameras sharing the same local connection, giving travelers another layer of visibility.
Check the original source at Engadget for full details and step-by-step instructions.
