You have to click on a link in the email from the Do Not Call registry to complete the registration.
If you don't click on the link in the email, you won't be registered.
There aren't even drawers in the desks, so each employee has an electronically secure locker.
The building is green and LEED-certified, so as people walk into a room for the first time, sensors automatically turn on the lights.
A lot of the workspace is shared, so American Express decided they needed a spot for their employees to have a little privacy.