[Don Norman is an Apple Fellow and former vice president of Apple's Advanced Technology Group, perhaps best known in Macintosh circles as Apple's "User Experience Architect" and the author of The Design of Everyday Things and other key works of user design. He is currently the president of UNext Learning Systems. (Nov-99)
Option-Click AirPort Menu for Network Details
If you hold down the Option key while clicking the AirPort menu in Mac OS X 10.5 Leopard, you'll see not just the names of nearby Wi-Fi networks, but additional details about the selected network. Details include the MAC address of the network, the channel used by the base station, the signal strength (a negative number; the closer to zero it is, the stronger the signal), and the transmit rate in megabits per second showing actual network throughput. If you hover the cursor over the name of a network to which you're not connected, a little yellow pop-up shows the signal strength and type of encryption.