data communication method that does not require physical connections among devices that use it.
refers to any type of computer network whose interconnections between modes is implemented without the use of wires.
devices can use wireless connectivity to communicate with each other. there are many types of wireless communication: 🔸wi-fi 🔸bluetooth 🔸3g and 4g 🔸infra-red (ir) 🔸near-field communication (nfc)