Apple is collaborating with Adobe in an effort to bring Flash to the iPhone, according to a statement made by Adobe CEO Shantanu Narayen at the recent World Economic Forum. “It’s a hard technical challenge, and that’s part of the reason Apple and Adobe are collaborating,” Narayen said. “The ball is in our court. The onus is on us to deliver.” Apple CEO Steve Jobs has previously said Adobe needed to create a third version of Flash, as he deemed the full Flash player “too slow” on the iPhone, but the Lite version too stripped-down. It is unclear from Narayen’s statement exactly how Apple might be helping the company in this process, or how exactly the software will work once completed.