You can log in to the same user account from multiple devices.
Each device in an account has their own private Protected Items, but shares the Storage Vaults. Because Storage Vaults are the unit of deduplication, all backups from all devices in the account can be deduplicated against each other. This also means that devices can restore each others’ data.
An administrator can revoke devices from your account.
A device has a “friendly name” that is set by the device when it is first registered. The “friendly name” defaults to the hostname of the PC. An administrator can rename devices in an account.
Because additional devices incur a cost, there are limits placed on the total number of devices in an account. Additional plans must be purchased for each device you want to add.