By developing a device that logs everything internally and automatically dumps it to government computers, either within the employees office building, or for nonsensitive employees, across a secured internet connection. And making it a felony to use any other device for government-related work.
First, that presupposes a secure connection between a mobile device and a government computer. That technology isn't widespread nor cheap.
Second, the regulation requires only government records, not working documents. That system will have to determine which is which.
Third, the National Archives would need the capacity to process that amount of data for storage. There has been no increases in funding to pay for that.
So for the average Schmoe working at any government office, they've got no way to actually comply at the present time.