In true tech fashion, it states that they offer;
Secure, accessible voting at your fingertips".
In the US, online voting has used by some overseas voters and military personnel, that cannot vote in person or via postal ballot. 
Don't worry peeps, I'm not going to publish any security problems or anything like that. I would not do well in jail. Let's be fair, I would be passed around like currency in the shower room.
However, I will say this.