iPhone Developers have an axe over their head.

Implications: Mr. Jobs says it would not be used except in extreme conditions. But what if he changes his mind, what if the next CEO of Apple wants to use this to keep developers in line or increase the charges to have your app sold via the iTunes store.

Analysis: We have all heard the term it's a slippery slope you don't want to get on. Well, the kill switch could be one of those slippery slopes. While Mr. Jobs says right now he would not use it, then why even brother to develop the switch and then why place it in the iPhone OS.

or

Is Apple going to use it as a method of monopoly to control the iPhone software development and sales. They current charge a 30% fee to sell an app via their store, who is saying they can't raise that to 90% and with a kill switch they can.

Will others start to follow their lead and develop kill switches for computers and other products that only allow their own products to work with the host. Game consols, computers, maybe even washing machines that only can use one kind of soap.

Keep doing this type of design and watch the government move into protection of the consumer.