I wonder what Apple would do if you leased some rooftop space in the mall across the street from the entrance to their new HQ and aimed cameras at the entrance, recording every license plate going in and out? Then buy the CA DMV records, which you can do for marketing purposes, and use that to build an employee list to be sold to recruiters.
You don't need to. That's the beauty of spam, whether e-mail or paper.
If your client wants to target developers at Apple, you've narrowed the mailing list size from several million to just a few thousand. If 30% of those are developers, then you've already improved on the usual mass mailing targeting average, which is in the single digits.
Once you have license numbers, you can get names. Once you have names, you can look at LinkedIn, Facebook, and CiteSeeer to see what they're into.
You can also gather intelligence on what Apple is working on. More AI people? More voice recognition people? More chip designers? More phone sales people?
