iPhone UDID

The Instaviz beta test is keyed to a unique identifier (UDID) for your iPhone or iPod Touch. This is how you retrieve the UDID:

• Connect your iPhone or iPod Touch to the computer
• In iTunes, find it in the Devices section and choose the Summary tab
• Click on the Serial Number: line. It should change to Identifier: and list a series of letters and numbers.
• Choose Copy from the Edit menu and Paste the number into your reply email.

You can also use the free App Store apps Ad Hoc Helper or BetaHelper to do this.