diff --git a/README.md b/README.md
index 9a8d60a1..5b097e3a 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # angel_client
 
-[![pub 1.0.0](https://img.shields.io/badge/pub-1.0.0-brightgreen.svg)](https://pub.dartlang.org/packages/angel_client)
+[![pub 1.0.1](https://img.shields.io/badge/pub-1.0.1-brightgreen.svg)](https://pub.dartlang.org/packages/angel_client)
 [![build status](https://travis-ci.org/angel-dart/client.svg)](https://travis-ci.org/angel-dart/client)
 
 Client library for the Angel framework.
diff --git a/lib/angel_client.dart b/lib/angel_client.dart
index 86a808e1..00acef77 100644
--- a/lib/angel_client.dart
+++ b/lib/angel_client.dart
@@ -17,7 +17,7 @@ typedef AngelDeserializer(x);
 
 /// Represents an Angel server that we are querying.
 abstract class Angel {
-  String get authToken;
+  String authToken;
   String basePath;
 
   Angel(String this.basePath);
@@ -28,6 +28,9 @@ abstract class Angel {
       String authEndpoint: '/auth',
       String reviveEndpoint: '/auth/token'});
 
+  /// Opens the [url] in a new window, and  returns a [Stream] that will fire a JWT on successful authentication.
+  Stream<String> authenticateViaPopup(String url, {String eventName: 'token'});
+
   Future close();
 
   /// Applies an [AngelConfigurer] to this instance.
@@ -37,21 +40,17 @@ abstract class Angel {
 
   Service service<T>(String path, {Type type, AngelDeserializer deserializer});
 
-  Future<http.Response> delete(String url,
-      {Map<String, String> headers});
+  Future<http.Response> delete(String url, {Map<String, String> headers});
 
   Future<http.Response> get(String url, {Map<String, String> headers});
 
   Future<http.Response> head(String url, {Map<String, String> headers});
 
-  Future<http.Response> patch(String url,
-      {body, Map<String, String> headers});
+  Future<http.Response> patch(String url, {body, Map<String, String> headers});
 
-  Future<http.Response> post(String url,
-      {body, Map<String, String> headers});
+  Future<http.Response> post(String url, {body, Map<String, String> headers});
 
-  Future<http.Response> put(String url,
-      {body, Map<String, String> headers});
+  Future<http.Response> put(String url, {body, Map<String, String> headers});
 }
 
 /// Represents the result of authentication with an Angel server.
diff --git a/lib/base_angel_client.dart b/lib/base_angel_client.dart
index 728df035..639f6d2c 100644
--- a/lib/base_angel_client.dart
+++ b/lib/base_angel_client.dart
@@ -50,9 +50,6 @@ AngelHttpException failure(http.Response response, {error, StackTrace stack}) {
 }
 
 abstract class BaseAngelClient extends Angel {
-  @override
-  String authToken;
-
   final http.BaseClient client;
 
   BaseAngelClient(this.client, String basePath) : super(basePath);
diff --git a/lib/browser.dart b/lib/browser.dart
index e112f20c..231c2340 100644
--- a/lib/browser.dart
+++ b/lib/browser.dart
@@ -1,9 +1,9 @@
 /// Browser library for the Angel framework.
 library angel_client.browser;
 
-import 'dart:async' show Future;
+import 'dart:async' show Future, Stream, StreamController;
 import 'dart:convert' show JSON;
-import 'dart:html' show window;
+import 'dart:html' show CustomEvent, window;
 import 'package:http/browser_client.dart' as http;
 import 'angel_client.dart';
 import 'auth_types.dart' as auth_types;
@@ -45,4 +45,29 @@ class Rest extends BaseAngelClient {
       return result;
     }
   }
+
+  @override
+  Stream<String> authenticateViaPopup(String url,
+      {String eventName: 'token', String errorMessage}) {
+    var ctrl = new StreamController<String>();
+    var wnd = window.open(url, 'angel_client_auth_popup');
+
+    wnd
+      ..on['beforeunload'].listen((_) {
+        if (!ctrl.isClosed) {
+          ctrl.addError(new AngelHttpException.notAuthenticated(
+              message:
+                  errorMessage ?? 'Authentication via popup window failed.'));
+          ctrl.close();
+        }
+      })
+      ..on[eventName ?? 'token'].listen((CustomEvent e) {
+        if (!ctrl.isClosed) {
+          ctrl.add(e.detail);
+          ctrl.close();
+        }
+      });
+
+    return ctrl.stream;
+  }
 }
diff --git a/lib/io.dart b/lib/io.dart
index caec159e..b1ec9f1f 100644
--- a/lib/io.dart
+++ b/lib/io.dart
@@ -18,6 +18,10 @@ class Rest extends BaseAngelClient {
     return new RestService(
         client, this, "$basePath/$uri", T != dynamic ? T : type);
   }
+  @override
+  Stream<String> authenticateViaPopup(String url, {String eventName: 'token'}) {
+    throw new UnimplementedError('Opening popup windows is not supported in the `dart:io` client.');
+  }
 }
 
 /// Queries an Angel service via REST.
diff --git a/pubspec.yaml b/pubspec.yaml
index e7f88483..2fab6c13 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: angel_client
-version: 1.0.0
+version: 1.0.1
 description: Client library for the Angel framework.
 author: Tobe O <thosakwe@gmail.com>
 homepage: https://github.com/angel-dart/angel_client