Registering for a new account using your iPad/iPod will require a phone number and optional email address. You can use Tango on your iPad/iPod to make voice/video calls and send chat messages like any other iOS mobile device.
If you already have a registered account, you can sync your account to your iPad/iPod by registering with your current phone number and email address. You can then use your account on both your mobile device and your iPad/iPod.
* If you previously had a registered account on your iPad/iPod using just an email address, you will need to add a phone number to your account that isn't already registered on Tango, and your account will be recovered.