diff --git a/src/App.tsx b/src/App.tsx
index f819cbdb9..0e9340eaf 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,7 +1,37 @@
 import React from 'react';
 
-export const App: React.FC = () => (
-  <div className="App">
-    <p className="App__message">The last pressed key is [Enter]</p>
-  </div>
-);
+type State = {
+  lastKeyPressed: string | null;
+};
+
+export class App extends React.PureComponent<{}, State> {
+  state: State = {
+    lastKeyPressed: null,
+  };
+
+  handleKeyPressed = (event: KeyboardEvent) => {
+    this.setState({ lastKeyPressed: event.key });
+  };
+
+  componentDidMount(): void {
+    window.addEventListener('keydown', this.handleKeyPressed);
+  }
+
+  componentWillUnmount(): void {
+    window.removeEventListener('keydown', this.handleKeyPressed);
+  }
+
+  render(): React.ReactNode {
+    const { lastKeyPressed } = this.state;
+
+    return (
+      <div className="App">
+        <p className="App__message">
+          {lastKeyPressed
+            ? `The last pressed key is [${lastKeyPressed}]`
+            : 'Nothing was pressed yet'}
+        </p>
+      </div>
+    );
+  }
+}
diff --git a/src/index.tsx b/src/index.tsx
index 7d27337cd..8b7750da1 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -2,5 +2,6 @@ import { createRoot } from 'react-dom/client';
 import { App } from './App';
 
 import './index.scss';
+import React from 'react';
 
 createRoot(document.getElementById('root') as HTMLElement).render(<App />);