excluding Standard membership

Can someone help me out, i am using Cometchat for my site, but i don't want the standard membership to have access. Why, i don't want spammers and idiots using my mobile app. So does anyone have a clue on how i can accomplish this?

You will need to ask Comet Chat about this one but their support is not the best in the world.

It is good idea to some of developers create module for cometchat integration like esase's phpbb integration. Everything with cometchat will be much easier to do...I have purchase cometchat and they exclude standard membership for me. Just create a ticket at cometchat. And one more thing, I tell them to create module for boonex dolphin but, for now nothing...

They are working on it, but its been like 5 times already they have got it wrong. In my opinion i think its a great mod, but the standard membership i think we should have more control over it like the promotion membership and the ones we can create. I shall see what happens. Thanks guys!