I got my first metallic credit card from Apple a few years ago. I thought it was more a curiosity than anything else. Soon after, my wife got a metallic card from Chase. American Express and Discover have both been making metal cards for years as well. Now, thanks to a partnership between NokNok and CompoSecure, you will see new types of cards that have something besides their outer skin to offer consumers: the ability to include authentication tokens and cold cryptocurrency wallets. You can read more in my blog post for NokNok here.