I think some people got a slow start using Apple Pay. I am one of those people. However, I am using it more and more. At this point I think I use it more on websites with Safari on my Mac than my other devices. As far as I can tell it is secure and of course, super convenient. It you are an Apple Pay user or considering using it, then read this article which describes how to use Apple Pay on the Apple Watch, iPhone, iPad and Mac. It is quite thorough. Even though I use Apple Pay, I learned a couple of things I did not know from the article.