diff --git a/types/solid-auth-client/index.d.ts b/types/solid-auth-client/index.d.ts
index 9508804eb2..4c3e9bbaa1 100644
--- a/types/solid-auth-client/index.d.ts
+++ b/types/solid-auth-client/index.d.ts
@@ -1,6 +1,7 @@
 // Type definitions for solid-auth-client 2.3
 // Project: https://github.com/solid/solid-auth-client#readme
 // Definitions by: Vincent <https://github.com/Vinnl>
+//                 James <https://github.com/durandj>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.2
 import { EventEmitter } from 'events';
@@ -8,13 +9,26 @@ import { EventEmitter } from 'events';
 export interface Session {
     webId: string;
 }
+
+export interface AsyncStorage {
+    getItem(key: string): Promise<undefined | string>;
+    setItem(key: string, value: string): Promise<void>;
+    removeItem(key: string): Promise<void>;
+}
+
+interface LoginOptions {
+    callbackUri?: string;
+    popupUri?: string;
+    storage?: Storage | AsyncStorage;
+}
+
 export interface SolidAuthClient extends EventEmitter {
-    fetch(input: RequestInfo, init?: RequestInit): Promise<Response>;
-    currentSession(): Promise<Session | undefined>;
-    trackSession(callback: (session?: Session) => void): void;
-    login(identityProvider: string): Promise<void>;
-    logout(): Promise<void>;
-    popupLogin(params: { popupUri: string }): Promise<Session>;
+  fetch(input: RequestInfo, init?: RequestInit): Promise<Response>;
+  currentSession(storage?: AsyncStorage): Promise<Session | undefined>;
+  trackSession(callback: (session?: Session) => void): void;
+  login(identityProvider: string, options?: LoginOptions): Promise<void>;
+  logout(storage?: AsyncStorage): Promise<void>;
+  popupLogin(params?: LoginOptions): Promise<Session>;
 }
 
 declare const instantiated: SolidAuthClient;
diff --git a/types/solid-auth-client/solid-auth-client-tests.ts b/types/solid-auth-client/solid-auth-client-tests.ts
index f574a87460..8b813f0411 100644
--- a/types/solid-auth-client/solid-auth-client-tests.ts
+++ b/types/solid-auth-client/solid-auth-client-tests.ts
@@ -17,6 +17,17 @@ async function login(idp: string) {
     alert(`Logged in as ${session.webId}`);
 }
 
+async function loginWithOptions(idp: string) {
+  const session = await auth.currentSession();
+  if (!session)
+    await auth.login(idp, {
+      callbackUri: '/callback',
+      popupUri: 'https://solid.community/common/popup.html',
+      storage: localStorage,
+    });
+  else alert(`Logged in as ${session.webId}`);
+}
+
 async function popupLogin() {
   let session = await auth.currentSession();
   const popupUri = 'https://solid.community/common/popup.html';
@@ -25,6 +36,18 @@ async function popupLogin() {
   alert(`Logged in as ${session.webId}`);
 }
 
+async function popupLoginWIthOptions() {
+  let session = await auth.currentSession();
+  const popupUri = 'https://solid.community/common/popup.html';
+  if (!session)
+    session = await auth.popupLogin({
+      callbackUri: '/callback',
+      popupUri,
+      storage: localStorage,
+    });
+  alert(`Logged in as ${session.webId}`);
+}
+
 auth.logout().then(() => alert('Goodbye!'));
 
 async function greetUser() {