Authenticated Device:

An authenticated device (including mobile devices and web browsers) is one that has been approved by the customer to log in through the original device or by the customer authenticating the login using an SMS OTP. Once authenticated, the device will not need to authenticate access again in subsequent logins. 
The detailed list of authenticated devices includes the device name, location, version, and the most recent login time. Customers can use the original device to rename, delete devices, or log out of the account on all devices if they feel there is any suspicion or risk.