How do you know who the other party is when you drop the air?

The name of the other iPhone will be displayed. You must click Accept to send it successfully, and then you can confirm who sent it. Airdrop delivery is a unique function of Apple's iOS, iPadOS and macOS systems, which is used to share files between multiple devices. Just drag and drop the file to the avatar of a friend who uses airdrop delivery function, and one-to-one file transmission (similar to wireless network transmission) can be carried out.

At the WWDC conference in 20 13, airdrop delivery was added to iOS devices, and airdrop delivery application was not supported by devices below iPhone 5. It is determined by the transmission mode of airdrop transmission. In fact, airdrop transmission is carried out by using the point-to-point network between Macs, which is essentially a local area network transmission, and does not need routers or complex hotspots. Everything is done by the system in the background.

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The reason why we need a new network card is that we can directly establish hotspots and share files with other Macs without disconnecting the current wifi network. The general wifi network card does not have this ability. Airdrop delivery is transmitted via Bluetooth and wifi. Among them, Bluetooth "handshakes" and Wi-Fi "transmits". The whole transmission process does not need the participation of network connection.

Even if your iOS device is offline, you can still transfer files through airdrop. Airdrop delivery also supports Black Apple (PC is modified to run macOS), but it needs to be equipped with a WiFi network card that supports Airdrop delivery, such as Broadcom's 4322/94322. Although Apple claims that airdrop delivery is limited, hackers found that airdrop delivery can be used on any Mac running OS X Lion, and only need to enter a specific code, and this function can also be used via Ethernet.