Kazuya Sakakihara spent ten years working at Sony as a senior software engineer, helping bring both the PS3 and PS4 to the world. Heās no longer at the company (parting ways in early 2013), but before he left he made sure his name quite literally lives on inside the code of pretty much every PlayStation 4.
As you can see here, in this snippet sent in by Chris Gallizzi, Sakakihara has left his name inside the PS4ās HDD code. Now, coders leaving ācalling cardsā is nothing new, it happens all the time, but itās usually left in the ācommentsā, the parts where humans leave human messages for other humans. And even then, itās often in the form of initials. Sakakiharaās full name is lying there in the actual code, and doesnāt require any kind of decryption to see it.
Sure beats scrawling it on the bathroom wall on his last day at the office.
Interestingly, his name also has a typo. I wonder if that was just that, a typo, or whether it was a concession to keep the code humming.