Hmmm ... Now that I think about it ... RSA Security LLC makes those RSA SecureID Tokens. It's a device that provides users with a key to login to a secured site. So, I can sort of see how they are utilize the patent in regards to Claim 24. I am not sure how come claim 24 was not included, but I could see how RSA Security utilizes it. Does it make sense for a company to only license a claim in a patent and not the whole patent?