diff --git a/components/header.tsx b/components/header.tsx
index 520a067..99990fa 100644
--- a/components/header.tsx
+++ b/components/header.tsx
@@ -2,6 +2,7 @@ import { useState } from 'react'
 import Head from 'next/head'
 import Link from 'next/link'
 import { useRouter } from 'next/router'
+import User from './user'
 
 const NAV_ENTRIES = [
   {
@@ -59,6 +60,7 @@ export default function Header() {
                   </a>
                 )
               })}
+              <User />
             </nav>
             <nav
               onClick={() => setHamburgerOpen(!hamburgerOpen)}
@@ -96,6 +98,7 @@ export default function Header() {
                         </a>
                       )
                     })}
+                    <User />
                   </div>
                 </div>
               </div>
diff --git a/next.config.mjs b/next.config.mjs
index 4b993ee..6b0a055 100644
--- a/next.config.mjs
+++ b/next.config.mjs
@@ -1,6 +1,6 @@
 import { withAxiom } from 'next-axiom'
 import createMDX from '@next/mdx'
- 
+
 /** @type {import('next').NextConfig} */
 const nextConfig = {
   swcMinify: true,
@@ -9,15 +9,15 @@ const nextConfig = {
   // Optionally, add any other Next.js config below
   async redirects() {
     return [
-    //   {
-    //     source: '/admin',
-    //     destination: '/nope',
-    //     permanent: true,
-    //   },
+      //   {
+      //     source: '/admin',
+      //     destination: '/nope',
+      //     permanent: true,
+      //   },
     ]
   },
 }
- 
+
 const withMDX = createMDX({
   // Add markdown plugins here, as desired
   options: {
@@ -25,6 +25,6 @@ const withMDX = createMDX({
     rehypePlugins: [],
   },
 })
- 
+
 // Merge MDX config with Next.js config
-export default withMDX(nextConfig)
\ No newline at end of file
+export default withMDX(nextConfig)
diff --git a/pages/_app.tsx b/pages/_app.tsx
index 9bb9bec..fa0491a 100644
--- a/pages/_app.tsx
+++ b/pages/_app.tsx
@@ -4,24 +4,48 @@ import { useEffect } from 'react'
 
 import type { AppProps } from 'next/app'
 
+import { useSession, signIn, SessionProvider } from 'next-auth/react'
 import Layout from '../components/layout';
 
 import '../styles/index.css'
 import '../styles/gfm.css'
 
+function Auth({ children }) {
+  const { data: session, status } = useSession()
+  const isUser = !!session?.user
+
+  useEffect(() => {
+    if (status === 'loading') return // Do nothing while loading
+    if (!isUser) signIn() // If not authenticated, force log in
+  }, [isUser, status])
+
+  if (isUser) {
+    return children
+  }
+
+  // Session is being fetched, or no user.
+  // If no user, useEffect() will redirect.
+  return <div>Loading...</div>
+}
+
 export default function MyApp({
   Component,
-  pageProps,
+  pageProps: { session, ...pageProps },
 }) {
-  // Use the layout defined at the page level, if available
-  const getLayout = Component.getLayout ?? ((page) => page)
- 
   return (
     <div className="flex flex-col min-h-screen">
-      <Layout>
-        { getLayout(<Component {...pageProps}/>) }
-        <Analytics />
-      </Layout>
+      <SessionProvider session={session}>
+        <Layout>
+          {Component.authenticationRequired ? (
+            <Auth>
+              <Component {...pageProps} />
+            </Auth>
+          ) : (
+            <Component {...pageProps} />
+          )}
+          <Analytics />
+        </Layout>
+      </SessionProvider>
       <AxiomWebVitals />
     </div>
   )