diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index fa823d8..f67eced 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
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@@ -5707,6 +5816,15 @@
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+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/prettier-linter-helpers/-/prettier-linter-helpers-1.0.0.tgz",
+      "integrity": "sha512-GbK2cP9nraSSUF9N2XwUwqfzlAFlMNYYl+ShE/V+H8a9uNl/oUqB1w2EL54Jh0OlyRSd8RfWYJ3coVS4TROP2w==",
+      "dev": true,
+      "requires": {
+        "fast-diff": "^1.1.2"
+      }
+    },
     "pretty-bytes": {
       "version": "5.5.0",
       "resolved": "https://registry.npmjs.org/pretty-bytes/-/pretty-bytes-5.5.0.tgz",
@@ -12496,6 +12648,7 @@
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/redent/-/redent-3.0.0.tgz",
       "integrity": "sha512-6tDA8g98We0zd0GvVeMT9arEOnTw9qM03L9cJXaCjrip1OO764RDBLBfrB4cwzNGDj5OA5ioymC9GkizgWJDUg==",
+      "dev": true,
       "requires": {
         "indent-string": "^4.0.0",
         "strip-indent": "^3.0.0"
@@ -12510,10 +12663,13 @@
         "symbol-observable": "^1.2.0"
       }
     },
-    "redux-localstorage": {
-      "version": "0.4.1",
-      "resolved": "https://registry.npmjs.org/redux-localstorage/-/redux-localstorage-0.4.1.tgz",
-      "integrity": "sha1-+vbXGcWBOXKU2BFHP/zt7gZckzw="
+    "redux-localstorage-simple": {
+      "version": "2.4.0",
+      "resolved": "https://registry.npmjs.org/redux-localstorage-simple/-/redux-localstorage-simple-2.4.0.tgz",
+      "integrity": "sha512-Zj28elJtO4fqXXC+gikonbKhFUkiwlalScYRn3EGUU44Pika1995AqUgzjIcsSPlBhIDV2WudFqa/YI9+3aE9Q==",
+      "requires": {
+        "merge": "2.1.0"
+      }
     },
     "regenerate": {
       "version": "1.4.2",
@@ -14368,6 +14524,7 @@
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/strip-indent/-/strip-indent-3.0.0.tgz",
       "integrity": "sha512-laJTa3Jb+VQpaC6DseHhF7dXVqHTfJPCRDaEbid/drOhgitgYku/letMUqOXFoWV0zIIUbjpdH2t+tYj4bQMRQ==",
+      "dev": true,
       "requires": {
         "min-indent": "^1.0.0"
       }
@@ -15532,6 +15689,7 @@
           "integrity": "sha512-oWb1Z6mkHIskLzEJ/XWX0srkpkTQ7vaopMQkyaEIoq0fmtFVxOthb8cCxeT+p3ynTdkk/RZwbgG4brR5BeWECw==",
           "optional": true,
           "requires": {
+            "bindings": "^1.5.0",
             "nan": "^2.12.1"
           }
         },
@@ -16129,6 +16287,7 @@
           "integrity": "sha512-oWb1Z6mkHIskLzEJ/XWX0srkpkTQ7vaopMQkyaEIoq0fmtFVxOthb8cCxeT+p3ynTdkk/RZwbgG4brR5BeWECw==",
           "optional": true,
           "requires": {
+            "bindings": "^1.5.0",
             "nan": "^2.12.1"
           }
         },
diff --git a/frontend/package.json b/frontend/package.json
index 214a250..4b7c518 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -3,13 +3,6 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
-    "@testing-library/jest-dom": "^5.11.4",
-    "@testing-library/react": "^11.1.0",
-    "@testing-library/user-event": "^12.1.10",
-    "@types/jest": "^26.0.20",
-    "@types/node": "^14.14.25",
-    "@types/react": "^17.0.1",
-    "@types/react-dom": "^17.0.0",
     "classnames": "^2.2.6",
     "luxon": "^1.25.0",
     "node-sass": "^4.14.1",
@@ -22,7 +15,7 @@
     "react-router-dom": "^5.2.0",
     "react-scripts": "4.0.1",
     "redux": "^4.0.5",
-    "redux-localstorage": "^0.4.1",
+    "redux-localstorage-simple": "^2.4.0",
     "rxjs": "^6.6.3",
     "rxjs-hooks": "^0.6.2",
     "semantic-ui-css": "^2.4.1",
@@ -39,8 +32,18 @@
   "eslintConfig": {
     "extends": [
       "react-app",
-      "react-app/jest"
-    ]
+      "react-app/jest",
+      "prettier"
+    ],
+    "plugins": [
+      "prettier"
+    ],
+    "rules": {
+      "prettier/prettier": "warn",
+      "standard/array-bracket-even-spacing": 0,
+      "standard/computed-property-even-spacing": 0,
+      "standard/object-curly-even-spacing": 0
+    }
   },
   "browserslist": {
     "production": [
@@ -56,8 +59,29 @@
   },
   "proxy": "http://api:3000",
   "devDependencies": {
+    "@testing-library/jest-dom": "^5.11.4",
+    "@testing-library/react": "^11.1.0",
+    "@testing-library/user-event": "^12.1.10",
+    "@types/classnames": "^2.2.11",
+    "@types/jest": "^26.0.20",
     "@types/lodash": "^4.14.168",
+    "@types/luxon": "^1.26.4",
+    "@types/node": "^14.14.25",
+    "@types/ol": "^6.4.2",
+    "@types/react": "^17.0.1",
+    "@types/react-dom": "^17.0.0",
     "@types/react-redux": "^7.1.16",
-    "@types/react-router-dom": "^5.1.7"
+    "@types/react-router-dom": "^5.1.7",
+    "eslint-config-prettier": "^6.15.0",
+    "eslint-plugin-prettier": "^3.3.1",
+    "prettier": "^2.2.1"
+  },
+  "prettier": {
+    "useTabs": false,
+    "trailingComma": "all",
+    "tabWidth": 2,
+    "semi": true,
+    "singleQuote": true,
+    "printWidth": 120
   }
 }
diff --git a/frontend/src/components/Page/index.js b/frontend/src/components/Page/index.tsx
similarity index 65%
rename from frontend/src/components/Page/index.js
rename to frontend/src/components/Page/index.tsx
index 02112a6..a352962 100644
--- a/frontend/src/components/Page/index.js
+++ b/frontend/src/components/Page/index.tsx
@@ -3,6 +3,6 @@ import classnames from 'classnames'
 
 import styles from './Page.module.scss'
 
-export default function Page({small, children}) {
+export default function Page({children, small = false}: {children: React.ReactNode, small?: boolean }) {
   return <main className={classnames(styles.page, small && styles.small)}>{children}</main>
 }
diff --git a/frontend/src/components/RegistrationForm.tsx b/frontend/src/components/RegistrationForm.tsx
index 6bd54d6..2515124 100644
--- a/frontend/src/components/RegistrationForm.tsx
+++ b/frontend/src/components/RegistrationForm.tsx
@@ -1,28 +1,45 @@
-import React from 'react'
-import {Form, Button} from 'semantic-ui-react'
+import React from 'react';
+import { Form, Button } from 'semantic-ui-react';
 
-export default function RegistrationForm({onSubmit: onSubmitOuter}) {
-  const [username, setUsername] = React.useState(null)
-  const [email, setEmail] = React.useState(null)
-  const [password, setPassword] = React.useState(null)
-  const [password2, setPassword2] = React.useState(null)
+type RegistrationFormSubmit = {
+  username: string | null;
+  email: string | null;
+  password: string | null;
+};
 
-  const onChangeUsername = React.useCallback((e) => setUsername(e.target.value), [])
-  const onChangeEmail = React.useCallback((e) => setEmail(e.target.value), [])
-  const onChangePassword = React.useCallback((e) => setPassword(e.target.value), [])
-  const onChangePassword2 = React.useCallback((e) => setPassword2(e.target.value), [])
+export default function RegistrationForm({
+  onSubmit: onSubmitOuter,
+}: {
+  onSubmit: (data: RegistrationFormSubmit) => void;
+}) {
+  const [username, setUsername] = React.useState('');
+  const [email, setEmail] = React.useState('');
+  const [password, setPassword] = React.useState('');
+  const [password2, setPassword2] = React.useState('');
+
+  const onChangeUsername = React.useCallback((e) => setUsername(e.target.value), []);
+  const onChangeEmail = React.useCallback((e) => setEmail(e.target.value), []);
+  const onChangePassword = React.useCallback((e) => setPassword(e.target.value), []);
+  const onChangePassword2 = React.useCallback((e) => setPassword2(e.target.value), []);
 
   const onSubmit = React.useCallback(() => {
     if (username && email && password && password2 === password) {
-      onSubmitOuter({username, email, password})
+      onSubmitOuter({ username, email, password });
     }
-  }, [username, email, password, password2, onSubmitOuter])
+  }, [username, email, password, password2, onSubmitOuter]);
 
   return (
     <Form onSubmit={onSubmit}>
       <Form.Input label="Username" value={username} onChange={onChangeUsername} name="username" />
       <Form.Input label="e-Mail" value={email} onChange={onChangeEmail} name="email" />
-      <Form.Input label="Password" type="password" value={password} onChange={onChangePassword} name="password" />
+      <Form.Input
+        label="Password"
+        type="password"
+        value={password}
+        onChange={onChangePassword}
+        name="password"
+        minLength={6}
+      />
       <Form.Input
         label="Password (repeat)"
         type="password"
@@ -30,8 +47,9 @@ export default function RegistrationForm({onSubmit: onSubmitOuter}) {
         onChange={onChangePassword2}
         name="password2"
         error={password2 != null && password !== password2 ? 'Your passwords do not match.' : null}
+        minLength={6}
       />
       <Button type="submit">Submit</Button>
     </Form>
-  )
+  );
 }
diff --git a/frontend/src/index.js b/frontend/src/index.js
index 3b32f09..01c793c 100644
--- a/frontend/src/index.js
+++ b/frontend/src/index.js
@@ -5,15 +5,9 @@ import 'semantic-ui-css/semantic.min.css'
 import './index.css'
 import App from './App'
 
+import { store } from './store';
+
 import {Provider} from 'react-redux'
-import {compose, createStore} from 'redux'
-import persistState from 'redux-localstorage'
-
-import rootReducer from './reducers'
-
-const enhancer = compose(persistState(['login']))
-
-const store = createStore(rootReducer, undefined, enhancer)
 
 // TODO: remove
 Settings.defaultLocale = 'de-DE'
diff --git a/frontend/src/pages/RegistrationPage.tsx b/frontend/src/pages/RegistrationPage.tsx
index 171bd2c..e257796 100644
--- a/frontend/src/pages/RegistrationPage.tsx
+++ b/frontend/src/pages/RegistrationPage.tsx
@@ -1,18 +1,36 @@
-import React from 'react'
-import {connect} from 'react-redux'
-import {Redirect} from 'react-router-dom'
+import React from 'react';
+import { connect } from 'react-redux';
+import { Redirect } from 'react-router-dom';
 
-import {Page, RegistrationForm} from '../components'
+import api from 'api';
+import { Page, RegistrationForm } from 'components';
+import type { RootState } from '../store';
 
-const RegistrationPage = connect((state) => ({loggedIn: Boolean(state.login)}))(function RegistrationPage({loggedIn}) {
-  return loggedIn ? (
-    <Redirect to="/" />
-  ) : (
+const RegistrationPage = connect((state: RootState) => ({ loggedIn: Boolean(state.login) }))(function RegistrationPage({
+  loggedIn,
+}) {
+  const [message, setMessage] = React.useState();
+
+  const onSubmit = React.useCallback(async ({ username, email, password }) => {
+    const response = await api.post(`/accounts/register`, {
+      body: { username, email, password, confirmPassword: password },
+    });
+
+    if (response && response.message) {
+      setMessage(response.message);
+    }
+  }, []);
+
+  if (loggedIn) {
+    return <Redirect to="/" />;
+  }
+
+  return (
     <Page small>
       <h2>Register</h2>
-      <RegistrationForm />
+      {message ? message : <RegistrationForm onSubmit={onSubmit} />}
     </Page>
-  )
-})
+  );
+});
 
-export default RegistrationPage
+export default RegistrationPage;
diff --git a/frontend/src/reducers/index.js b/frontend/src/reducers/index.js
index 0cfe682..8b46fb9 100644
--- a/frontend/src/reducers/index.js
+++ b/frontend/src/reducers/index.js
@@ -1,5 +1,5 @@
-import {combineReducers} from 'redux'
+import { combineReducers } from 'redux';
 
-import login from './login'
+import login from './login';
 
-export default combineReducers({login})
+export default combineReducers({ login });
diff --git a/frontend/src/reducers/login.js b/frontend/src/reducers/login.js
index 32b8777..29e723d 100644
--- a/frontend/src/reducers/login.js
+++ b/frontend/src/reducers/login.js
@@ -1,20 +1,20 @@
-const initialState = null
+const initialState = null;
 
 export function login(user) {
-  return {type: 'LOGIN.LOGIN', payload: {user}}
+  return { type: 'LOGIN.LOGIN', payload: { user } };
 }
 
 export function logout() {
-  return {type: 'LOGIN.LOGOUT'}
+  return { type: 'LOGIN.LOGOUT' };
 }
 
 export default function loginReducer(state = initialState, action) {
   switch (action.type) {
     case 'LOGIN.LOGIN':
-      return action.payload.user
+      return action.payload.user;
     case 'LOGIN.LOGOUT':
-      return null
+      return null;
     default:
-      return state
+      return state;
   }
 }
diff --git a/frontend/src/store.ts b/frontend/src/store.ts
new file mode 100644
index 0000000..e2e9b33
--- /dev/null
+++ b/frontend/src/store.ts
@@ -0,0 +1,22 @@
+import { applyMiddleware, createStore, compose } from 'redux';
+import { save, load } from 'redux-localstorage-simple';
+
+import rootReducer from './reducers';
+
+declare global {
+  interface Window {
+    __REDUX_DEVTOOLS_EXTENSION_COMPOSE__?: typeof compose;
+  }
+}
+
+const composeEnhancers =
+  (process.env.NODE_ENV !== 'production' && window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__) || compose;
+
+export const store = createStore(
+  rootReducer,
+  load({ states: ['login'], disableWarnings: true }),
+  composeEnhancers(applyMiddleware(save({ states: ['login'] }))),
+);
+
+export type AppDispatch = typeof store.dispatch;
+export type RootState = ReturnType<typeof store.getState>;