We have been using Protectimus for providing 2 factor authentication for three months already. Earlier we contacted several other providers(Yubico and others). But they all were not interested in our proposal, since we are not such a big client and asked for some improvements that thay obviously were not ready to offer. Eventually we were not disappointed in our final decision to choose Protectimus. Their manager not only helped us to integrate their solution, but also raised our request for technical department. After that we got the specific feature, which other providers do not offer at all and which we needed so much. So now we not only use their service as 2 factor authentication, but also receive regular notification reports, which of our employees and when entered OTP, so we can not only raise security level of our business, but also control working hours of our stuff.

This solution is quite easy to use, but in the meantime, it provides reliable protection of the system from unauthorized access. An integration took a while (special thanks from my developer for the ready-to-use SDK for Java).

It's a convenient modern way of protecting your data. I liked best the fact that Protectimus provides virus-resistant tokens which are absolutely isolated from the server. So the code cannot be intercepted by any hacker or malicious software.