>may be aspects of the service that Apple is unwilling to give away because they involve trade secrets It's a chat app. It's one of the first apps a programmer

>may be aspects of the service that Apple is unwilling to give away because they involve trade secrets It's a chat app. It's one of the first apps a programmer learns to make. The one and only thing separating iMessage from 10,000 other chat apps is the fact it's the default on the most common phone. The trade secret is inertia and anti competitive lock-in.