I am interested in this project and have made a contribution to the Pre-sale.

I was sceptical however about the pretty aggressive marketing of it with a too rich Referral programme.

But I am coming round to the idea that it is a genuine project with great potential.

Here is the patent registration of the KeyCAPTCHA system by Nicholas Prays, the founder of STEX.

https://www.google.com/patents/US20120323700