The relevant quote about Steve Jobs signing off on an iOS sideloading-related prompt, from a 2008-era email: > Just two months after declaring that “the App St

The relevant quote about Steve Jobs signing off on an iOS sideloading-related prompt, from a 2008-era email: > Just two months after declaring that “the App Store is going to be the exclusive way to distribute iPhone applications,” iOS chief Scott Forstall asked which of these two templates Jobs preferred: “The application ‘Monkey Ball’ from the developer ‘Sega’ did not come from the App Store. Do you want to open it?” or “Are you sure you want to open the application ‘Monkey Ball’ from the developer ‘Sega’?” Jobs picked the latter. Interestingly, about 4 years later, a very similar string ended up being used in Mac OS Lion with the release of Gatekeeper.