diff --git a/README.md b/README.md
index 2db6bb1c3..cfee3871a 100755
--- a/README.md
+++ b/README.md
@@ -145,6 +145,7 @@ List of Definitions
 * [node_zeromq](https://github.com/JustinTulloss/zeromq.node) (by [Dave McKeown](https://github.com/davemckeown))
 * [node-sqlserver](https://github.com/WindowsAzure/node-sqlserver) (by [Boris Yankov](https://github.com/borisyankov))
 * [Numeral.js](https://github.com/adamwdraper/Numeral-js) (by [Vincent Bortone](https://github.com/vbortone/))
+* [Persona](http://www.mozilla.org/en-US/persona) (by [James Frasca](https://github.com/Nycto))
 * [PhantomJS](http://phantomjs.org) (by [Jed Hunsaker](https://github.com/jedhunsaker))
 * [PhoneGap](http://phonegap.com) (by [Boris Yankov](https://github.com/borisyankov))
 * [Platform](https://github.com/bestiejs/platform.js) (by [Jake Hickman](https://github.com/JakeH))
diff --git a/persona/persona-tests.ts b/persona/persona-tests.ts
new file mode 100644
index 000000000..1a62f1bc2
--- /dev/null
+++ b/persona/persona-tests.ts
@@ -0,0 +1,48 @@
+/// <reference path="persona.d.ts" />
+
+
+// https://developer.mozilla.org/en-US/docs/Web/API/navigator.id.watch
+navigator.id.watch({
+    loggedInUser: 'bob@example.org',
+    onlogin: function(assertion: String) {},
+    onlogout: function() {}
+});
+navigator.id.watch({
+    loggedInUser: 'bob@example.org',
+    onlogin: function(assertion: String) {},
+    onlogout: function() {},
+    onready: function() {}
+});
+
+
+// https://developer.mozilla.org/en-US/docs/Web/API/navigator.id.request
+navigator.id.request();
+navigator.id.request({siteName: 'Example Site', siteLogo: '/logo.png'});
+navigator.id.request({termsOfService: '/tos.html', privacyPolicy: '/privacy.html'});
+navigator.id.request({
+    backgroundColor: '#rrggbb',
+    siteName: 'My Example Site',
+    siteLogo: '/logo.png',
+    termsOfService: '/tos.html',
+    privacyPolicy: '/privacy.html',
+    returnTo: '/welcome.html',
+    oncancel: function() {}
+});
+
+
+// https://developer.mozilla.org/en-US/docs/Web/API/navigator.id.logout
+navigator.id.logout();
+
+
+// https://developer.mozilla.org/en-US/docs/Web/API/navigator.id.get
+var gotAssertion = function ( assertion: String ) {}
+navigator.id.get(gotAssertion);
+navigator.id.get(gotAssertion, {privacyPolicy: "/privacy.html", termsOfService: "/tos.html"});
+navigator.id.get(gotAssertion, {
+    backgroundColor: '#rrggbb',
+    siteName: 'My Example Site',
+    siteLogo: '/logo.png',
+    termsOfService: '/tos.html',
+    privacyPolicy: '/privacy.html'
+});
+
diff --git a/persona/persona.d.ts b/persona/persona.d.ts
new file mode 100644
index 000000000..0e9dc15e3
--- /dev/null
+++ b/persona/persona.d.ts
@@ -0,0 +1,47 @@
+// Type definitions for Persona
+// Project: http://www.mozilla.org/en-US/persona
+// Definitions by: James Frasca <https://github.com/Nycto>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+declare module Persona {
+
+    export interface WatchOptions {
+        loggedInUser: String
+        onlogin: (String) => void
+        onlogout: () => void
+        onready?: () => void
+    }
+
+    export interface RequestOptions {
+        backgroundColor?: String
+        siteName?: String
+        siteLogo?: String
+        termsOfService?: String
+        privacyPolicy?: String
+        returnTo?: String
+        oncancel?: () => void
+    }
+
+    export interface GetOptions {
+        backgroundColor?: String
+        siteName?: String
+        siteLogo?: String
+        termsOfService?: String
+        privacyPolicy?: String
+    }
+
+    export interface Persona {
+        watch( options: WatchOptions ): void
+        request( options: RequestOptions ): void
+        request(): void
+        logout(): void
+        get( gotAssertion: (String) => void ): void
+        get( gotAssertion: (String) => void, options: GetOptions ): void
+    }
+
+}
+
+interface Navigator {
+    id: Persona.Persona
+}
+