diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8d052a0..92fb7b0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -21,6 +21,8 @@ set(PROJECT_SOURCES
         src/simulation/mouseSim.hpp
         src/simulation/keyboardSim.cpp
         src/simulation/keyboardSim.hpp
+        src/simulation/simulate.cpp
+        src/simulation/simulate.hpp
 )
 
 if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
diff --git a/src/simulation/keyboardSim.hpp b/src/simulation/keyboardSim.hpp
index fa0ebf3..b5d1a1c 100644
--- a/src/simulation/keyboardSim.hpp
+++ b/src/simulation/keyboardSim.hpp
@@ -1,6 +1,8 @@
 /**
  * @file keyboardSim.hpp
  * @brief Simulates keyboard input in Windows.
+ * 
+ * @note Do not include this file directly. Use @link simulate.hpp @endlink instead.
  */
 #pragma once
 
diff --git a/src/simulation/mouseSim.hpp b/src/simulation/mouseSim.hpp
index 2e4f7ec..33689f8 100644
--- a/src/simulation/mouseSim.hpp
+++ b/src/simulation/mouseSim.hpp
@@ -1,6 +1,8 @@
 /**
  * @file mouseSim.hpp
  * @brief Simulates mouse input in Windows.
+ * 
+ * @note Do not include this file directly. Use @link simulate.hpp @endlink instead.
  */
 #pragma once
 
diff --git a/src/simulation/simulate.cpp b/src/simulation/simulate.cpp
new file mode 100644
index 0000000..0a7ac8a
--- /dev/null
+++ b/src/simulation/simulate.cpp
@@ -0,0 +1,31 @@
+#include "simulate.hpp"
+
+bool blockExternalInput()
+{
+	return BlockInput(TRUE);
+}
+
+bool unblockExternalInput()
+{
+	return BlockInput(FALSE);
+}
+
+void clearExistingInput()
+{
+	// Get the keyboard state
+	BYTE keyboardState[256];
+	GetKeyboardState(keyboardState);
+
+	// Cancel any existing input
+	// Iterates through all keys, checking if they are down, and releasing them if they are
+	for (int i = 0; i < 256; i++)
+	{
+		if (keyboardState[i] & 0x80)
+		{
+			// Release the key
+			keyUp(i);
+		}
+		// ostream_here << "0X" << std::hex << i << std::dec << "(" << i << ")"
+		// 		 << "is" << (keyboardState[i] & 0x80 ? "down" : "up");
+	}
+}
diff --git a/src/simulation/simulate.hpp b/src/simulation/simulate.hpp
new file mode 100644
index 0000000..694240b
--- /dev/null
+++ b/src/simulation/simulate.hpp
@@ -0,0 +1,24 @@
+#pragma once
+
+#include "keyboardSim.hpp"
+#include "mouseSim.hpp"
+
+/** This function is used to block input from external devices.
+ * It stops keyboard and mouse input events from reaching applications.
+ * It is used to prevent the user from accidentally interfering with the program.
+ *
+ * https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-blockinput
+ *
+ * @note **Emergency Exit:** <kbd>CTRL</kbd> + <kbd>ALT</kbd> + <kbd>DEL</kbd>
+ * @see @link unblockExternalInput()
+ */
+bool blockExternalInput();
+
+/** This function is used to unblock input from external devices.
+ * It allows keyboard and mouse input events to reach applications again.
+ *
+ * @see @link blockExternalInput()
+ */
+bool unblockExternalInput();
+
+void clearExistingInput();