Obtaining your iPad's UDID
- Open iTunes (the Mac or PC app).
- Plug in your iPad to the computer.
- Click on the iPad's name under the devices list in iTunes.
- Ensure you’re on the Summary tab.
- Click on the text that says Serial Number. It should change to say Identifier (UDID).
- Select Copy from the Edit menu.
- Your UDID is now in the clipboard, so you can paste it into an email or message.