Apple has released a comprehensive set of guidelines to help developers make better ARKit apps, including thinking about safety, handling tracking problems, and some language suggestions to make technology seem less intimidating.
The highlights are:
Apple also provided some AR glyphs – an example of which can be seen at the top of this article – that can be used to trigger your AR experience. Using this icon is probably a good idea, at least in the early days of AR when both users and developers are still figuring out what works well.
Paul Hudson is the creator of Hacking with Swift, the most comprehensive series of Swift books in the world. He's also the editor of Swift Developer News, the maintainer of the Swift Knowledge Base, and Mario Kart world champion. OK, so that last part isn't true. If you're curious you can learn more here.