苹果公司的丹·里奇奥（Dan Riccio）说：“可以说，我们所面临的最棘手的挑战是取代Touch ID。 “这是非常非常困难的，如果我们要取代它，我们希望用最好的和更自然的东西来代替它。”
Riccio也反映了苹果今年仍在尝试使用Touch ID的叙述。
“我听说有一些传言，我们无法通过玻璃来触摸Touch ID，所以我们不得不删除它，”Riccio说，回答一个关于设计变化是否迟到的问题。
“当我们早日看到Face ID被认为是好的时候，我们知道如果我们能够成功，我们可以让我们想要做的产品，如果这是真的可以我们可以焚烧桥梁，全部融入，这是假设这是一个更好的解决方案，这就是我们所做的，所以我们没有时间在背面或玻璃上或侧面看指纹，因为如果我们做了这些事情，这将是最后一刻的变化，相对于实现我们正在努力实现的更重要的事情，这将是一个分心，这是以高质量的方式完成的。
"Arguably the toughest challenge that we had is to replace Touch ID," Apple's Dan Riccio says. "It was very, very hard. If we were going to replace it we wanted to replace it with something that was at the end of the day both better and more natural."
Riccio also flatly counters the narrative that Apple was still trying to use Touch ID in the iPhone X this year.
"I heard some rumor [that] we couldn't get Touch ID to work through the glass so we had to remove that," Riccio says, answering a question about whether there were late design changes.
"When we hit early line of sight on getting Face ID to be [as] good as it was, we knew that if we could be successful we could enable the product that we wanted to go off and do and if that's true it could be something that we could burn the bridges and be all in with. This is assuming it was a better solution. And that's what we did. So we spent no time looking at fingerprints on the back or through the glass or on the side because if we did those things, which would be a last-minute change, they would be a distraction relative to enabling the more important thing that we were trying to achieve, which was Face ID done in a high-quality way."
