Starting October 1, 2020 you will need to have the updated South Carolina license (REAL ID) in order to board a domestic or commercial flight, enter a secure federal building, or visit a military installation. The good news is that there is plenty of time in order to make the change, either online or in person.
The bad news is that time flies.
Not everybody is eligible to purchase the new license online and therefore must go to a South Carolina DMV branch. To check if you are eligible to purchase online or to find out what documents you must bring with you to get the license in person, go to this link:
New License Information
Now if you do not fly with your license and use your passport then you would not have to get the new license. However, it will not take much of your time and will end up being more convenient after you have it.