Animating Google Earth (3D) & Map (2D) for Live GPS via Ajax and RestFul Web Service

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;

[ServiceContract]
public interface IRESTfulService
{

    [OperationContract]
    [WebInvoke(Method = "GET", ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Bare, UriTemplate = "LiveLocation/json")]
    LatestPosition GetLatestPosition();

}

[DataContract]
public class LatestPosition
{
    [DataMember]
    public string lat = "";
    [DataMember]
    public string lon = "";
}