You can sync your task lists between devices (computer, phone, tablet etc).
Go to WhatsNext? on a new device and enter this code to link your account.
Once linked, click here to return to your ToDo Lists
If you wish, you can remove your account from this device. If you are logged in elsewhere, you will need to perform this step on those devices too.
If you're sure you wish to continue, type 'remove' in the box below