For detailed info:

https://safe-network-explained.github.io/architecture

For what it can do in short:

Don't forget it's decentralized and preventing identity theft via the SAFE (maid) network.
Source https://safenetforum.org/t/project-decorum-crowdsale/8474/122

Other interesting stuff, there's a second dev now:

And there's already a working Poc: http://www.project-decorum.com/live-proof-of-concept/
imho the PoC and second dev (first dev working full time on the project) is not yet calculated into the current price