We tried to implement steemconnect to our games, but this solution whenever you want to make transfer (spin) redirects you to another page it occured it cannot be applied.

Whatsmore thridparties can store "tokens" provided by steem connect which in fact we can use the same way as private keys.

Steem Connect is in fact very poor solution, it seems safe only because it doesn't store your active key (which we also never do).

One of our team members develops currently really safe Steem login system under the name: "Steem Secure Login"
https://github.com/BartolomeoItaliano/Steem-Secure-Login-Browsers-Extensions

It will be released soon and solution is supported by utopian.io