There were (and are) so many smart people working at Apple. Every time I’d walk down a hallway I’d be aware of the great stuff taking shape behind the many closed doors.
It took some getting used to, all those closed doors.

The birthplace of iTunes
…most parts of the building were accessible to most employees, but there were obvious exceptions.
…more to come…

like the area where OS X86 was being developed? :-p
great blog.
awesome mike.
Hi Mike,
thanks for sharing with us these great images and insights. Been following your site since the early days and looking forward to your THICK BOOK
Could you decode for us shortly what kind of information and or function has the door tag been holding? You know, the black plate on the glass door section with big “d” letter on it? Thanks.
Loving the site – amazed you’re allowed to do this kind of thing.
Surely the birth-place of iTunes (strictly speaking) was outside Apple, when it was SoundJam.
The door tag just has the office number and the name of the resident, or the name of the room if it’s a meeting room. The ‘d’ is just the first letter of the office number; it doesn’t have any other significance.
It’s perhaps worth noting that in contrast to many other organisations, almost everyone at Apple has an office with a door. It doesn’t lead to the public-service style office lordship so much as it makes it possible to have the full range of interaction with others; from loud, social corridor or doorway conversations all the way through to intense, secretive conversations on the spur of the moment.
As Mike alludes, it is quite possible as a visitor at Apple to walk within feet of the Next Big Thing without having the slightest suspicion that it’s there.