A wireless charger is a device that replenishes the battery of electronic gadgets, such as smartphones or smartwatches, without the need for physical connectors or cables. It uses electromagnetic fields to transfer energy between two objects through a process called inductive charging. The charger typically consists of a charging pad and a compatible device containing a receiver coil. When the device is placed on the pad, the charger generates an alternating electromagnetic field, which induces a current in the receiver coil, thus charging the battery. Wireless charging is convenient and reduces wear on charging ports, but it may be less efficient than wired charging. In cybersecurity, wireless chargers can pose security risks if compromised, potentially enabling data theft or device manipulation.