Can I detect a spy camera with my mobile phone? The short answer is that you will not find a well hidden camera or microphone with your mobile phone. Cameras and microphones are passive devices and do not in themselves produce anything that can be detected. Detect Devices Using Arp Scan The job of the ARP protocol is to map IPs to MAC addresses. It provides a method for hosts on a LAN to communicate without knowing any address and create a cache of information. When a new computer enters the LAN, it receives an IP and updates its ARP cache with the Gateway information. Arping is a computer software tool that is used to discover hosts on a computer network. The program tests whether a given IP address is in use on the local network, and can get additional information about the device using that address. Arping operates work at the layer 2 (or the link layer of the OSI model) using the Address Resolution Protocol (ARP) for probing hosts. Since ARP is non-routable, this only works for the local network. However, in networks employing repeaters that use proxy ARP, the ARP response may be coming from such proxy hosts and not from the probed target. A detailed tutorial on Arp scan to detect available device and to show more information about the device would be posted soon, subscribe not to miss out. Hire a professional Hacker Without Upfront Payment for your hacking needs. Safe and secure .