Have an up-to-date inventory of mobile devices and tablets
Keeping an inventory of your IT assets allows you to understand the scope of your essential assets. It also helps you to identify those resources that are no longer used but have not yet been decommissioned.
Keep an inventory of all mobile devices and tablets, both company owned as privately owned (if they have access to your data), including what resources they can access in your company.
You should make sure you are able to impose minimum security requirements, such as up-to-date operating systems, up-to-date antivirus and antimalware systems and the ability to revoke access and erase data remotely.
Have an up-to-date inventory of mobile devices.
Have an up-to-date inventory of end user devices, including private devices with organizational data (mail, docs,...)