What tools does Ubuntu have that can say how long a device has been on. The time on should not be based on when Ubuntu was installed since for example the PC could be 2 years old and after that long somebody could have installed Ubuntu. This 2 years could not be taken into consideration. Not to confuse with uptime for example.
Is there a way to determine the time a device has been on or active and what tools can see this. For example I know hard drives can say this. What other devices could and what tools for this devices.