Apple has apparently included a blacklisting mechanism in iPhone OS 2.x through which the device can phone home, check for unauthorized applications, and disable them. The OS includes a URL that points to a page containing a list of unauthorized applications, specifically those listed here.

According to Jonathan Zdziarski, author of the book iPhone Open Application Development and an iPhone forensics manual:

This suggests that the iPhone calls home once in a while to find out what applications it should turn off. At the moment, no apps have been blacklisted, but by all appearances, this has been added to disable applications that the user has already downloaded and paid for, if Apple so chooses to shut them down.

I discovered this doing a forensic examination of an iPhone 3G. It appears to be tucked away in a configuration file deep inside CoreLocation.

If true, this really goes beyond being simple anti-choice and into some weird authoritarian realm. Why shouldn’t a consumer be allowed to modify a product he paid for?

Apple = Microsoft with better UI

COOLER HEADS PREVAIL: CNET follows up with some legitimate reasons for a kill-switch.

But I realize the big deal to me is choice. I don’t want to be locked down. I don’t run iTunes on my iPod and I don’t even run Mac’s OS on my Mac. I like variety. I like choice. I think it was Reason’s Nick Gillespie who said (probably in much better language), “Freedom means being able to opt out.”

With Apple, opting out is always difficult. But I do. And I will again. Because I’m planning on buying the iPhone. After all, no one else is offering the internet on a mobile device like they are. But the minute the Google Phone appears with its open source operating system, I’ll jump ship. I’ll leave AT&T and Apple and sure there will be a penalty to pay. But getting a customer to pay a one time penalty for breaking a contract isn’t exactly good business. Good business is giving the customer choice.

On second thought, maybe I’ll just buy the OpenMoko.

UPDATE: And now this news, new OpenMoko on sale July 4th.