If you're in any doubt that Apple is serious about dominating the enterprise market with its slew of iDevices, eating RIM's lunch right out from under it, then check this: Apple's patenting a way to restrict access to parts of the App Store for specialist  enterprise  users.
Apple's plan is pretty straightforward : It envisages iPhones (probably in the main) being used by business folk, centrally administered by the company's IT division, with tight restrictions on the kind of apps you can use on the devices compared to the "as you wish" nature of private iPhone uses. The trick is to securely identify both the phone and the user to iTunes, and then present only a limited subset of the app store for access.
This sounds like a nightmare from an "openness" point of view, and Apple detractors will have a field day noting how dictatorial Apple seems to be being, and how it's merely the tail wagged by the demands of big business. But think about it for a moment. I remember when I was given my first corporate BlackBerry, some 7 or 8 years ago. It was expensive, precious (I was warned), and had required no small degree of technical jiggery-pokery in the server room. As such I really wasn't allowed to mess with it too much--not too much Web surfing, don't try downloading attachments to emails, and certainly don't go installing apps you've found for it. This is how many companies think about corporate mobile devices, and with good reason: Mis-use could cost the company a lot of cash, unthinking users could easily mess up an expensive device or even download a virus, and if you did something that disabled or circumvented the device's security, and then lost it, all sorts of company data could be leaked.
In Apple's patent, an enterprise iOS device uses encryption to connect to the App Store and the software that's available in the App Store subset has been pre-approved at a corporate level. Downloading of apps to the iPhone can only then happen for approved apps, to approved devices and by approved users. Apple imagines that companies would be able to create "storefronts" to advertise, personalize and control their particular app subsets (which could, of course, include company-specific apps which only employees of the company could gain access to), and users would have to identify themselves somehow to the system so that they could download content.
The Apple patent application for this is highly technical, as you may deduce from the image, but it's mostly concerned with the mechanics by which this form of restricted-access App Store would identify approved phones, and then deliver content--over a secure system--to those phones when users asked for it.
Interesting stuff, especially when you consider the big take-away from this story: Apple's been carefully researching, and patenting, tech in the enterprise sphere with iPhones and iPads specifically in mind for well over a year (this patent was applied for in late 2009). At some point soon, it may choose to expand its iPhone smartphone dominance not merely by adopting a new U.S. carrier, but by carefully embracing an entire market sector, stuffed with buyers with deep pockets--Enterprise.
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