The building is created to house some 13,000 employees. However, the notes were removed because they detracted from the building's design, the people said.
Although the campus opened last September for the 10th anniversary iPhone introduction, it was done under a temporary occupancy permit, and Apple employees just started moving in last month. I don't expect the people designing cutting-edge hardware and software to be walking into glass walls; that's the kind of behavior I expect from birds. For now, don't text and walk, Apple employees.
Apple's cofounder Steve Jobs originally proposed the $5 billion Apple Park campus shortly before his death in 2011. The building's design was crafted by famed architect Norman Foster, taking major cues from Apple co-founder Steve Job's vision for the new headquarters. Inside, work spaces known as "pods" also have glass walls and doors created to foster a culture of openness.
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During its opening a year ago, Apple designer Jony Ive told Wired that the structure is a "statement of openness, of free movement", as opposed to Apple's culture of secrecy. But the idea of using glass, however, isn't the most impressive detail about this structure, Apple's design chief Jony Ive said. "The achievement is to make a building where so many people can connect and collaborate and walk and talk", Ive told Wired in May.
Bloomberg reports staff have even used Post-It notes to mark the glass doors, but the notes were later taken down. Employees are not allowed to discuss anything related to Apple with outsiders. An Apple spokesperson declined to comment, but a representative for the US Occupational Safety and Health Administration in Silicon Valley directed Bloomberg to its website to check on reports of injuries.
An 83-year-old woman sued Apple in 2012 when she broke her nose after walking into an Apple Store's glass door. The construction team pushed back, but Apple held firm.