OS X 10.7 Lion features AirDrop, a way to wirelessly share files. But it isn’t immediately clear what the limits are in terms of location and distance.
Turns out you need to be pretty darn close. We’ve haven’t tested it extensively yet, but early indications show you need to be pretty much in the same room as the person you’re trading files with.
Here’s how it works. AirDrop’s technology is peer-to-peer Wi-Fi between two Macs running OS X Lion, So you don’t need a special network or special settings to get it working.
OS X Lion automatically discovers compatible Macs around you that are using AirDrop. Once they connect, Finder displays contact photos for both users.
Read the entire article here:
OS X Lion First Look: AirDrop.