ios - Create custom international keyboard for iPhone

Question

Is it possible to take advantage of the international keyboard feature for the iPhone and create a custom keyboard that can be used over the entire phone not just within a particular app?

Similar to the Emoji keyboard but I'm under the impression that's somehow native to iOS and is just disabled by default?

I've looked at a lot of the questions on here regarding this, I'd just like to get a definitive answer.

Answer 1

As per Apple's submission guidelines:

• 2.5 Apps that use non-public APIs will be rejected
• 2.6 Apps that read or write data outside its designated container area will be rejected

There are no public APIs to add an additional keyboard.

The files that store keyboard data are definitely stored outside of your app's container.

In short: There is no way to implement a custom global keyboard on a non-jailbroken iOS device at this point in time.