diff --git a/migrations/0007_nervous_scalphunter.sql b/migrations/0007_nervous_scalphunter.sql
new file mode 100644
index 0000000..baf412d
--- /dev/null
+++ b/migrations/0007_nervous_scalphunter.sql
@@ -0,0 +1,2 @@
+ALTER TABLE "user" ADD COLUMN "first_name" text NOT NULL;--> statement-breakpoint
+ALTER TABLE "user" ADD COLUMN "last_name" text NOT NULL;
\ No newline at end of file
diff --git a/migrations/meta/0007_snapshot.json b/migrations/meta/0007_snapshot.json
new file mode 100644
index 0000000..e436475
--- /dev/null
+++ b/migrations/meta/0007_snapshot.json
@@ -0,0 +1,147 @@
+{
+  "id": "2039600b-1f5f-4f37-84dd-bb40636855e7",
+  "prevId": "b0849b3e-02e1-42e1-b07c-6fa613c98e82",
+  "version": "5",
+  "dialect": "pg",
+  "tables": {
+    "featuredAdventures": {
+      "name": "featuredAdventures",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "serial",
+          "primaryKey": true,
+          "notNull": true
+        },
+        "name": {
+          "name": "name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "location": {
+          "name": "location",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {}
+    },
+    "session": {
+      "name": "session",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "expires_at": {
+          "name": "expires_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": true
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "session_user_id_user_id_fk": {
+          "name": "session_user_id_user_id_fk",
+          "tableFrom": "session",
+          "tableTo": "user",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {}
+    },
+    "sharedAdventures": {
+      "name": "sharedAdventures",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true
+        },
+        "data": {
+          "name": "data",
+          "type": "json",
+          "primaryKey": false,
+          "notNull": true
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {}
+    },
+    "user": {
+      "name": "user",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true
+        },
+        "username": {
+          "name": "username",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "first_name": {
+          "name": "first_name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "last_name": {
+          "name": "last_name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "hashed_password": {
+          "name": "hashed_password",
+          "type": "varchar",
+          "primaryKey": false,
+          "notNull": true
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {}
+    }
+  },
+  "enums": {},
+  "schemas": {},
+  "_meta": {
+    "columns": {},
+    "schemas": {},
+    "tables": {}
+  }
+}
\ No newline at end of file
diff --git a/migrations/meta/_journal.json b/migrations/meta/_journal.json
index ff1ddfe..6550bd1 100644
--- a/migrations/meta/_journal.json
+++ b/migrations/meta/_journal.json
@@ -50,6 +50,13 @@
       "when": 1712105206127,
       "tag": "0006_melted_leech",
       "breakpoints": true
+    },
+    {
+      "idx": 7,
+      "version": "5",
+      "when": 1712167204757,
+      "tag": "0007_nervous_scalphunter",
+      "breakpoints": true
     }
   ]
 }
\ No newline at end of file
diff --git a/src/lib/components/Navbar.svelte b/src/lib/components/Navbar.svelte
index 3a47ee9..f1b0785 100644
--- a/src/lib/components/Navbar.svelte
+++ b/src/lib/components/Navbar.svelte
@@ -1,7 +1,7 @@
 <script lang="ts">
   import { visitCount } from "$lib/utils/stores/visitCountStore";
   import { goto } from "$app/navigation";
-
+  import type { DatabaseUser } from "$lib/server/auth";
   async function goHome() {
     goto("/");
   }
diff --git a/src/lib/db/schema.ts b/src/lib/db/schema.ts
index e5f1264..94b17bd 100644
--- a/src/lib/db/schema.ts
+++ b/src/lib/db/schema.ts
@@ -21,6 +21,8 @@ export const sharedAdventures = pgTable("sharedAdventures", {
 export const userTable = pgTable("user", {
   id: text("id").primaryKey(),
   username: text("username").notNull(),
+  first_name: text("first_name").notNull(),
+  last_name: text("last_name").notNull(),
   hashed_password: varchar("hashed_password").notNull(),
 });
 
diff --git a/src/lib/server/auth.ts b/src/lib/server/auth.ts
index 2907892..ccb1616 100644
--- a/src/lib/server/auth.ts
+++ b/src/lib/server/auth.ts
@@ -1,9 +1,8 @@
 import { DrizzlePostgreSQLAdapter } from "@lucia-auth/adapter-drizzle";
-import { Lucia } from "lucia";
+import { Lucia, TimeSpan } from "lucia";
 import { dev } from "$app/environment";
 import { userTable, sessionTable } from "$lib/db/schema";
 import { db } from "$lib/db/db.server";
-import { Argon2id } from "oslo/password";
 
 const adapter = new DrizzlePostgreSQLAdapter(db, sessionTable, userTable);
 
@@ -17,6 +16,9 @@ export const lucia = new Lucia(adapter, {
     return {
       // attributes has the type of DatabaseUserAttributes
       username: attributes.username,
+      id: attributes.id,
+      first_name: attributes.first_name,
+      last_name: attributes.last_name,
     };
   },
 });
@@ -24,15 +26,14 @@ export const lucia = new Lucia(adapter, {
 declare module "lucia" {
   interface Register {
     Lucia: typeof lucia;
-    DatabaseUserAttributes: DatabaseUserAttributes;
+    DatabaseUserAttributes: DatabaseUser;
   }
 }
 
-interface DatabaseUserAttributes {
-  username: string;
-}
 export interface DatabaseUser {
   id: string;
   username: string;
+  first_name: string;
+  last_name: string;
   hashed_password: string;
 }
diff --git a/src/routes/+layout.server.ts b/src/routes/+layout.server.ts
new file mode 100644
index 0000000..130d427
--- /dev/null
+++ b/src/routes/+layout.server.ts
@@ -0,0 +1,12 @@
+import type { LayoutServerLoad, PageServerLoad } from "./$types";
+
+export const load: LayoutServerLoad = async (event) => {
+  if (event.locals.user) {
+    return {
+      user: event.locals.user,
+    };
+  }
+  return {
+    user: null,
+  };
+};
diff --git a/src/routes/+layout.svelte b/src/routes/+layout.svelte
index b262a24..1d600fe 100644
--- a/src/routes/+layout.svelte
+++ b/src/routes/+layout.svelte
@@ -1,4 +1,4 @@
-<script>
+<script lang="ts">
   import Footer from "$lib/components/Footer.svelte";
   import Navbar from "$lib/components/Navbar.svelte";
   import "../app.css";
diff --git a/src/routes/+page.server.ts b/src/routes/+page.server.ts
new file mode 100644
index 0000000..d335f9e
--- /dev/null
+++ b/src/routes/+page.server.ts
@@ -0,0 +1,30 @@
+import { lucia } from "$lib/server/auth";
+import { fail, redirect } from "@sveltejs/kit";
+
+import type { Actions, PageServerLoad } from "./$types";
+
+export const load: PageServerLoad = async (event) => {
+  if (event.locals.user)
+    return {
+      user: event.locals.user,
+    };
+  return {
+    user: null,
+  };
+};
+
+export const actions: Actions = {
+  default: async (event) => {
+    if (!event.locals.session) {
+      return fail(401);
+    }
+
+    await lucia.invalidateSession(event.locals.session.id);
+    const sessionCookie = lucia.createBlankSessionCookie();
+    event.cookies.set(sessionCookie.name, sessionCookie.value, {
+      path: ".",
+      ...sessionCookie.attributes,
+    });
+    return redirect(302, "/login");
+  },
+};
diff --git a/src/routes/+page.svelte b/src/routes/+page.svelte
index d6ed621..08983a9 100644
--- a/src/routes/+page.svelte
+++ b/src/routes/+page.svelte
@@ -1,4 +1,8 @@
 <script lang="ts">
+  import { enhance } from "$app/forms";
+  import type { PageData } from "./$types";
+
+  export let data: PageData;
   import { goto } from "$app/navigation";
   import campingDrawing from "$lib/assets/camping.svg";
   import { visitCount } from "$lib/utils/stores/visitCountStore";
@@ -10,6 +14,9 @@
 
 <div class="flex flex-col items-center justify-center">
   <article class="prose">
+    {#if data.user && data.user.username != ""}
+      <h1 class="mb-4">Welcome {data.user.first_name}. Let's get Exploring!</h1>
+    {/if}
     <h1 class="mb-4">Welcome. Let's get Exploring!</h1>
   </article>
   <img src={campingDrawing} class="w-1/4 mb-4" alt="Logo" />
@@ -23,3 +30,9 @@
     </div>
   </div>
 </div>
+
+{#if data.user}
+  <form method="post" use:enhance>
+    <button>Sign out</button>
+  </form>
+{/if}
diff --git a/src/routes/signup/+page.server.ts b/src/routes/signup/+page.server.ts
index b6a99f9..990d5cd 100644
--- a/src/routes/signup/+page.server.ts
+++ b/src/routes/signup/+page.server.ts
@@ -4,17 +4,29 @@ import { fail, redirect } from "@sveltejs/kit";
 import { generateId } from "lucia";
 import { Argon2id } from "oslo/password";
 import { db } from "$lib/db/db.server";
+import type { DatabaseUser } from "$lib/server/auth";
 
 import type { Actions } from "./$types";
 import { userTable } from "$lib/db/schema";
+import { eq } from "drizzle-orm";
 
 export const actions: Actions = {
   default: async (event) => {
     const formData = await event.request.formData();
     const username = formData.get("username");
     const password = formData.get("password");
+    const firstName = formData.get("first_name");
+    const lastName = formData.get("last_name");
     // username must be between 4 ~ 31 characters, and only consists of lowercase letters, 0-9, -, and _
     // keep in mind some database (e.g. mysql) are case insensitive
+
+    // check all to make sure all fields are provided
+    if (!username || !password || !firstName || !lastName) {
+      return fail(400, {
+        message: "All fields are required",
+      });
+    }
+
     if (
       typeof username !== "string" ||
       username.length < 3 ||
@@ -35,17 +47,50 @@ export const actions: Actions = {
       });
     }
 
+    if (
+      typeof firstName !== "string" ||
+      firstName.length < 1 ||
+      firstName.length > 255
+    ) {
+      return fail(400, {
+        message: "Invalid first name",
+      });
+    }
+
+    if (
+      typeof lastName !== "string" ||
+      lastName.length < 1 ||
+      lastName.length > 255
+    ) {
+      return fail(400, {
+        message: "Invalid last name",
+      });
+    }
+
     const userId = generateId(15);
     const hashedPassword = await new Argon2id().hash(password);
 
-    // TODO: check if username is already used
+    const usernameTaken = await db
+      .select()
+      .from(userTable)
+      .where(eq(userTable.username, username))
+      .limit(1)
+      .then((results) => results[0] as unknown as DatabaseUser | undefined);
+
+    if (usernameTaken) {
+      return fail(400, {
+        message: "Username already taken",
+      });
+    }
     await db
       .insert(userTable)
       .values({
         id: userId,
         username: username,
+        first_name: firstName,
+        last_name: lastName,
         hashed_password: hashedPassword,
-      })
+      } as DatabaseUser)
       .execute();
 
     const session = await lucia.createSession(userId, {});
diff --git a/src/routes/signup/+page.svelte b/src/routes/signup/+page.svelte
index a553a36..2dffe4c 100644
--- a/src/routes/signup/+page.svelte
+++ b/src/routes/signup/+page.svelte
@@ -6,6 +6,10 @@
 <h1>Sign up</h1>
 <form method="post" use:enhance>
   <label for="username">Username</label>
+  <label for="first_name">First Name</label>
+  <input name="first_name" id="first_name" /><br />
+  <label for="last_name">Last Name</label>
+  <input name="last_name" id="last_name" /><br />
   <input name="username" id="username" /><br />
   <label for="password">Password</label>
   <input type="password" name="password" id="password" /><br />