Taking to Twitter, the man behind Mega pointed out a patent from 1997 which he claims is proof that two-step security is, in fact, his idea. He went further, accusing companies like Google, Facebook, and Twitter of infringing rights:
Google, Facebook, Twitter, Citibank, etc. offer Two-Step-Authentication. Massive IP infringement by U.S. companies. My innovation. My patent
Kindly, he's also explained that he decided early on not to sue any of these sites—though he isn't sure he can hold out much longer:
I never sued them. I believe in sharing knowledge & ideas for the good of society. But I might sue them now cause of what the U.S. did to me
The obvious question to ask here is: how much truth is there in Dotcom's claims? Arguably there are plenty of people who could try and lay claim to the system, but the patent which he points to seems legitimate enough.
Dating way back to 1997, it still accurately describes a system where a secondary access code is delivered by SMS. That could be difficult to beat. It'll be interesting to see if any other, similar claims creep out of the woodwork, that date back more than 16 years. [Twitter via Verge]