Looking for a specific Spoutcraft Plugin

I'm looking for a Plugin that won't let users connect unless they are running Spoutcraft. Does anyone know of a plugin that does this? I haven't been able to find one.

 

Its implemented in Spout
Look into the Spoutconfig and set ForceSinglePlayerClient to true

 

Tank you very much for your help.

 

is spoutcraft safe? or is it gonna steal my minecraft login info?

 

it has been around for so long i would say it is safe or you would have heard a LOT of stuff on stolen IDs. I'm also sure at least a few people on these forums have taken time to look at the code to make sure that it isn't stealing ID's and would have alerted the community to the fraud by now. I could be wrong, but that is my belief.