AirDrop

AirDrop is a Bluetooth sharing feature introduced as part of iOS 7 in 2013. It is also supported by iPadOS and macOS.

iOS and iPadOS
AirDrop can be managed by accessing the Control Center. Upon clicking the AirDrop icon, 3 options will appear: Receiving Off, Contacts Only and Everyone. Receiving Off closes AirDrop completely. Contacts Only restricts AirDrop connectivity to users identified in Contacts.

Mac OS X and macOS
In Mac OS X 10.7 or later, the AirDrop control window can be accessed by going to the Finder menu and selecting. It can also be accessed in a Finder Sidebar, if enabled.