To unlink, do the following steps :
1) Click on the Device icon on the upper right to open the drawer. You need to be connected (white, rather than grey icon).
2) Click on your device at the bottom of the drawer.
3) Select your device in the list.
4) Click on Forget Device. This will unlink your account and your SmartHalo.
Lending SmartHalo a friend
You have two ways to lend SmartHalo to somebody else, or to transfer ownership :
1) Unlink SmartHalo from your account and let your friend link it with his or her account.
2) Give your friend your user name and password, so that they can connect from their phone.