You don't have to give a street address when signing up with LSC, just a state. I am just taking precautions as someone in a prior post said they may check FF accounts to see if they reside at the same household. For physical prizes that have to be shipped, they use USPS to weed out duplicate prizes to the same household, even if there are several family members all doing LSC independantly.

I don't really know what are all the checks applied, the only thing I have seen is that since Jan, they seem to be auditing each LSC account for duplicate redemptions and rejecting the dupes but some people are getting miles anyway from rejected ones.