using System;
using System.Globalization;
using System.IO;
using System.Net;
using System.Text;
using System.Threading;
 
/* Equipment was activated with this URL :
 * https://www.google.com/powermeter/device/activate?mfg=WebIngenia&model=TestEquipment1&did=100102030405&cvars=1&dvars=0&rurl=http://test.webingenia.com/powerMeter&snonce=123
 *
 * The resulting request was (available here : http://test.webingenia.com/read/powerMeter#id2473 ) :
 * $_POST = array(
 *		[snonce] => 123
 *		[hash] => _____6c2562aeb7bab4e24afc7beeb18c701c04ba,____8c9f62fa8a137eba7fa35b5f58802fca2e56,____f4db13304c49d36fb81b20cabbe147f8ce34
 *		[token] => ________FhCtzebg_P____8BGMWjtUs
 *		[path] => /user/____4578579014915368/____4578579014915368/variable/WebIngenia.TestEquipment1.100102030405
 * )
 *
 */
 
namespace test {
	class Program {
 
		private static readonly Random _random = new Random();
 
		public const String DeviceHash = // Useless
			"____bf8262aeb7bab4e24afc7beeb18c701c04ba,____8c9f62fa8a137eba7fa35b5f58802fca2e56,____f4db13304c49d36fb81b20cabbe147f8ce34";
 
		public const String DeviceToken = // Needed for authentication
			"________FhCtzebg_P____8BGMWjtUs";
 
		public const String DevicePath = // URL of the device
			"/user/____4578579014915368/_____4578579014915368/variable/WebIngenia.TestEquipment1.100102030405";
 
		public const String DeviceVar = "c1";
 
		public const String FeedUrl = // URL of the Google PowerMeter API
			"https://www.google.com/powermeter/feeds";
 
		public const String EventUrl = // URL where to send the data
			FeedUrl + "/event";
 
		public const int Period = 5000; // 5 to 10 seconds
 
 
		static double MeterValue {
			get {
				return Settings.Default.MeterValue;
			}
			set {
				Settings.Default.MeterValue = value;
				Settings.Default.Save();
			}
		}
 
		static void Send() {
 
			// We increment the counter (by 0 to 1 kWh)
			MeterValue += _random.NextDouble();
 
			Console.WriteLine( "MeterValue : {0}", MeterValue );
 
			// This is what we are going to send
			var strContent = String.Format(
			@"
<feed xmlns=""http://www.w3.org/2005/Atom"" xmlns:meter=""http://schemas.google.com/meter/2008"">
	<entry>
      <category scheme=""http://schemas.google.com/g/2005#kind"" term=""http://schemas.google.com/meter/2008#instMeasurement"" />
      <meter:subject>{0}</meter:subject>
      <meter:occurTime meter:uncertainty=""1.0"">{1}</meter:occurTime>
      <meter:quantity meter:uncertainty=""0.001"" meter:unit=""kW h"">{2}</meter:quantity>
    </entry>
</feed>",
				FeedUrl + DevicePath + "." + DeviceVar,						// Device URL
				DateTime.UtcNow.ToString( "yyyy-MM-dd'T'HH:mm:ss.fffK" ),	// Current UTC date
				MeterValue.ToString( CultureInfo.InvariantCulture )			// Meter value
			);
 
			// We convert it into raw content
			var content = Encoding.UTF8.GetBytes( strContent );
 
			// We create the POST request
			var req = WebRequest.Create( EventUrl );
			req.Headers.Add( "Authorization", "AuthSub token=\"" + DeviceToken + "\"" );
			req.Method = "POST";
			req.ContentLength = content.Length;
			req.ContentType = "application/atom+xml";
 
			try {
				// Opening the request stream means starting the request
				Console.Write( "Requesting..." );
				using ( var requestStream = req.GetRequestStream() ) {
 
					// We send the content
					requestStream.Write( content, 0, content.Length );
 
					// And we end the request by getting the response
					using ( var streamReader = new StreamReader( req.GetResponse().GetResponseStream() ) ) {
						Console.WriteLine( "Result : " + streamReader.ReadToEnd() );
					}
				}
			}
			catch ( WebException e ) { // If a webException occurs (should be 400)
				// We display the error
				var response = e.Response as HttpWebResponse;
				if ( response == null ) // This is not the exception that we want
					throw;
				using ( response ) {
					using ( var responseStream = response.GetResponseStream() ) {
						Console.WriteLine(
							"Error {0} : {1} ",
							response.StatusCode,
							new StreamReader( responseStream ).ReadToEnd()
						);
					}
				}
			}
		}
 
		static void Main() {
			while ( true ) {
				try {
					Send();
				}
				catch ( Exception ex ) {
					Console.WriteLine( "Exception : " + ex );
				}
				Thread.Sleep( Period + _random.Next( Period ) );
			}
		}
 
		// This code was generated by Visual Studio (but I prefer to put it here rather than having to publish the VS project)
		#region Auto-generated
		[System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
		[System.CodeDom.Compiler.GeneratedCodeAttribute( "Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "9.0.0.0" )]
		internal sealed class Settings:System.Configuration.ApplicationSettingsBase {
 
			private static Settings defaultInstance = ( (Settings) ( Synchronized( new Settings() ) ) );
 
			public static Settings Default {
				get {
					return defaultInstance;
				}
			}
 
			[System.Configuration.UserScopedSettingAttribute()]
			[System.Diagnostics.DebuggerNonUserCodeAttribute()]
			[System.Configuration.DefaultSettingValueAttribute( "3000" )]
			public double MeterValue {
				get {
					return ( (double) ( this[ "MeterValue" ] ) );
				}
				set {
					this[ "MeterValue" ] = value;
				}
			}
		}
		#endregion
	}
}

<?PHP
header('Content-Type: text/plain');
 
$userId = '5616045291659744796';
 
if ( $_GET['user'] ) {
	if ( is_numeric( $_GET['user'] ) )
		$userId = $_GET['user'];
	else
		exit('This isn\'t a valid user id.');
}
 
$url = 'http://www.google.com/latitude/apps/badge/api?user='.$userId.'&type=json';
 
// We get the content
$content = file_get_contents( $url );
 
// We convert the JSON to an object
$json = json_decode( $content );
 
$coord = $json->features[0]->geometry->coordinates;
$timeStamp = $json->features[0]->properties->timeStamp;
 
if ( ! $coord ) 
	exit('This user doesn\'t exist.');
 
$date = date( 'd/m/Y H:i:s', $timeStamp );
$lat = $coord[1];
$lon = $coord[0];
 
echo $date.' : '.$lat.' x '.$lon;
?>

using System;
using System.Collections.Generic;
using System.Text;
using System.Web.Script.Serialization;
using System.Net;
using System.IO;
 
namespace LatitudeReader {
	class Program {
		static void Main() {
 
			Console.WriteLine( "What is your user id ?" );
 
			var userId = Console.ReadLine();
 
			if ( userId == String.Empty )
				userId = "5616045291659744796";
 
			// Url of the JSON Latitude feed
			var url = String.Format( "http://www.google.com/latitude/apps/badge/api?user={0}&type=json", userId );
 
			// We download the file
			var ms = new MemoryStream();
			Download( url, ms );
 
			// JSON in text format
			var textContent = UTF8Encoding.UTF8.GetString( ms.ToArray() );
 
			// We convert the JSON text file to an object
			// It returns 
			var jss = new JavaScriptSerializer();
			var jsonContent = jss.DeserializeObject( textContent ) as Dictionary<String, Object>;
 
			// We get the data
			var features = ( jsonContent[ "features" ] as object[] )[ 0 ] as Dictionary<string, object>;
			var geometry = features[ "geometry" ] as Dictionary<string, object>;
			var coordinates = geometry[ "coordinates" ] as object[];
			var lon = coordinates[ 0 ] as decimal?;
			var lat = coordinates[ 1 ] as decimal?;
 
			// And then the timestamp
			var properties = features[ "properties" ] as Dictionary<string, object>;
			var date = ConvertFromUnixTimestamp( (double) (int) properties[ "timeStamp" ] );
 
			// We convert the UTC date to local time
			date = date.ToLocalTime();
 
			Console.WriteLine( "{0} : {1} x {2}", date, lat, lon );
		}
 
		public static DateTime ConvertFromUnixTimestamp( double timestamp ) {
			DateTime origin = new DateTime( 1970, 1, 1, 0, 0, 0, 0 );
			return origin.AddSeconds( timestamp );
		}
 
		private const int BUFFER_SIZE = 1024;
 
		private static void Download( string url, Stream writeStream ) {
			var request = (HttpWebRequest) WebRequest.Create( url );
			var response = request.GetResponse();
 
			var readStream = response.GetResponseStream();
 
			var data = new Byte[ BUFFER_SIZE ];
 
			int n;
			do {
				n = readStream.Read( data, 0, BUFFER_SIZE );
				writeStream.Write( data, 0, n );
			} while ( n > 0 );
 
			writeStream.Flush();
			readStream.Close();
		}
	}
}