Client info pass to WCF

Hi~
i get a problem, i want to pass client info to wcf , it's easy to do by calling method to do that.

client program as : wcfserviceInstance.setclientInfo(name,ip,age,sex)

but the problem is , i have 60 methods in wcf service , and i don't want every method look like this :
wcfserviceInstance.methodA(name,ip,age,sex,methodA_param)
wcfserviceInstance.methodB(name,ip,age,sex,methodB_param)
......


is there any solution can do it (wcfserviceInstance.methodB(methodB_param)) ?

can i just setting something , and every wcfserviceInstance.method can read client info by it's own in wcf service side.

You could have a Shared list (Static in C#) in the WCF service side code and then a WCF method that your clients can call that adds a client to that list with a unique ID and adds all of their information - then in every other WCF method that the clients call you just pass in the client's unique ID and the server retrieves the information from that client from the shared list