I suggest there is no need for anything beyond what we’ve always done. Get sick, go home, take HCQ. Susceptible employees should take extra care and monitoring.
If you must, use a non-evasive, repeatable temperature reader to identify someone who may have a symptom. Careful —if its from China—to be calibrated properly.
Even temperature may not be a complete answer.
Buck up, or wither and die. Best of luck.
By the time they show symptoms they are all infected. Really cannot afford us all being sick at same time.