Only a tiny fraction of people is in a position to do this. If it were really an issue, using the pattern `shopname_n`, where nn is different for every address,

Only a tiny fraction of people is in a position to do this. If it were really an issue, using the pattern `shopname_n`, where nn is different for every address, should do the trick. It's similar to encrypting serial numbers so they don't [German Tank Problem](https://en.m.wikipedia.org/wiki/German_tank_problem https://en.m.wikipedia.org/wiki/German_tank_problem) them.