This issue totally reminds me of Social Security number usage, especially when they were still on the back of our ID's.
me: "Why do you need my social security number to rent a canoe from MWR?"
civilian: "Thats our policy, sir"
me: "I just did a 100 slide training session on Navy Knowledge online on Personal Information, and you guys don't need my social, nor are you storing the information correctly"
civ: "Sorry but thats our policy"
And repeat over and over with every shop in the unit. "Yeah those other people don't need your social, but we actually do."