Wireless communication allows the transfer of information over distances without wires. Guglielmo Marconi opened the way for modern wireless communication in 1895 with radio transmission. Wireless communication now includes services like mobile communication, fixed wireless services, satellite communication, and various military and scientific uses. Wireless networks allow computing devices to share information and resources without cables. Common wireless network devices include wireless routers, wireless adapters, and cable modems. Wireless networks are used by individuals, businesses, and emergency services for advantages like mobility and easy installation, though there are also health and security issues. Common wireless technologies include broadcasting, mobile phones, Wi-Fi, Bluetooth, and digital TV which have various applications and advantages for communication.