What are the top codemikes to learn?

Codemikes are tiny devices used to detect digital signatures, like the ones used by Google and Facebook.

But codemikers aren’t the only ones making their way around the world.

In the last decade, many other codemakers have sprung up in the field, from start-ups like Otsuka in the United Kingdom to bigger companies like Verisign and NXP.

Here’s what you need to know about the industry and what you can do to get started.