I do go to Sam's. Never once have they scanned my drivers license. And I will not allow it.
If they demand a scan of my drivers license I will leave all my potential purchases there and walk out, canceling my membership at the desk on the way to the door.
They do scan my Sam's card, which is not the same thing.
I guess I wasn't clear. They scan the DL at the service desk when you apply for membership, not when making purchases. Just experienced this in the last month or so (My Real ID DL would not scan so they manually entered the info.)