The move toward a cashless society won’t occur in one fell swoop. And there won’t be one single factor that brings it about.

There are, however, plenty of alternate payment methods that are nipping at its heels. Some have been around for more than half a century. Others have begun to pop up in the past few years. And a few are just getting their start now. But all of them shift the paradigm a bit.

Here are a few of the most popular cash alternatives, as well as some of the biggest up-and-comers.

Read more at CNBC.com