diff --git a/SerialPrograms/CMakeLists.txt b/SerialPrograms/CMakeLists.txt
index 123617e41..4ed5db1fe 100644
--- a/SerialPrograms/CMakeLists.txt
+++ b/SerialPrograms/CMakeLists.txt
@@ -302,6 +302,8 @@ file(GLOB MAIN_SOURCES
     Source/CommonFramework/Environment/HardwareValidation.h
     Source/CommonFramework/Environment/HardwareValidation_arm64.tpp
     Source/CommonFramework/Environment/HardwareValidation_x86.tpp
+    Source/CommonFramework/Environment/SystemSleep.cpp
+    Source/CommonFramework/Environment/SystemSleep.h
     Source/CommonFramework/Exceptions/FatalProgramException.cpp
     Source/CommonFramework/Exceptions/FatalProgramException.h
     Source/CommonFramework/Exceptions/OperationFailedException.cpp
diff --git a/SerialPrograms/SerialPrograms.pro b/SerialPrograms/SerialPrograms.pro
index 34674a6e5..692a34852 100644
--- a/SerialPrograms/SerialPrograms.pro
+++ b/SerialPrograms/SerialPrograms.pro
@@ -174,6 +174,7 @@ SOURCES += \
     Source/CommonFramework/CrashDump.cpp \
     Source/CommonFramework/Environment/Environment.cpp \
     Source/CommonFramework/Environment/HardwareValidation.cpp \
+    Source/CommonFramework/Environment/SystemSleep.cpp \
     Source/CommonFramework/Exceptions/FatalProgramException.cpp \
     Source/CommonFramework/Exceptions/OperationFailedException.cpp \
     Source/CommonFramework/Exceptions/ProgramFinishedException.cpp \
@@ -1177,6 +1178,7 @@ HEADERS += \
     Source/CommonFramework/Environment/HardwareValidation.h \
     Source/CommonFramework/Environment/HardwareValidation_arm64.tpp \
     Source/CommonFramework/Environment/HardwareValidation_x86.tpp \
+    Source/CommonFramework/Environment/SystemSleep.h \
     Source/CommonFramework/Exceptions/FatalProgramException.h \
     Source/CommonFramework/Exceptions/OperationFailedException.h \
     Source/CommonFramework/Exceptions/ProgramFinishedException.h \
diff --git a/SerialPrograms/Source/CommonFramework/Environment/HardwareValidation.h b/SerialPrograms/Source/CommonFramework/Environment/HardwareValidation.h
index c1aec51fc..951382f13 100644
--- a/SerialPrograms/Source/CommonFramework/Environment/HardwareValidation.h
+++ b/SerialPrograms/Source/CommonFramework/Environment/HardwareValidation.h
@@ -9,7 +9,9 @@
 
 namespace PokemonAutomation{
 
-
+// Check user hardware.
+// If the hardware is too old, send a QMessageBox to tell user and return false.
+// If the hardware may not be powerful enough, send a QMessageBox to inform user.
 bool check_hardware();
 
 
diff --git a/SerialPrograms/Source/CommonFramework/Environment/SystemSleep.cpp b/SerialPrograms/Source/CommonFramework/Environment/SystemSleep.cpp
new file mode 100644
index 000000000..b27d979c8
--- /dev/null
+++ b/SerialPrograms/Source/CommonFramework/Environment/SystemSleep.cpp
@@ -0,0 +1,70 @@
+/*  OS Sleep
+ *
+ *  From: https://github.com/PokemonAutomation/Arduino-Source
+ *
+ */
+
+#include "SystemSleep.h"
+
+#include <iostream>
+
+namespace PokemonAutomation{
+
+#if defined(__APPLE__)
+
+// Code from https://stackoverflow.com/questions/5596319/how-to-programmatically-prevent-a-mac-from-going-to-sleep/8461182#8461182
+
+SystemSleepController::SystemSleepController()
+ : m_prevention_succeeded(kIOReturnError), m_session_id(0) {}
+
+SystemSleepController::~SystemSleepController(){
+    enable_sleep();
+}
+
+bool SystemSleepController::prevent_sleep(bool prevent){
+    if (prevent){
+        return disable_sleep();
+    } else{
+        return enable_sleep();
+    }
+}
+
+bool SystemSleepController::disable_sleep(){
+    if (m_prevention_succeeded == kIOReturnSuccess){
+        return true;
+    }
+    std::cout << "Disabling display sleep and OS sleep" << std::endl;
+    // kIOPMAssertionTypeNoDisplaySleep prevents display sleep,
+    // kIOPMAssertionTypeNoIdleSleep prevents idle sleep
+
+    // NOTE: IOPMAssertionCreateWithName limits the string to 128 characters. 
+    CFStringRef reasonForActivity = (CFStringRef) __builtin___CFStringMakeConstantString("SerialPrograms is running");
+
+    m_prevention_succeeded = kIOReturnError;
+    m_session_id = 0;
+    m_prevention_succeeded = IOPMAssertionCreateWithName(kIOPMAssertionTypeNoDisplaySleep, 
+        kIOPMAssertionLevelOn, reasonForActivity, &m_session_id); 
+    if (m_prevention_succeeded != kIOReturnSuccess){
+        m_session_id = 0;
+        std::cerr << "Cannot disable sleep. Error code " << m_prevention_succeeded << std::endl;
+        return false;
+    }
+
+    std::cout << "Disabled display sleep and OS sleep" << std::endl;
+    return true;
+}
+
+bool SystemSleepController::enable_sleep(){
+    if (m_prevention_succeeded == kIOReturnSuccess){
+        IOPMAssertionRelease(m_session_id);
+        m_session_id = 0;
+        m_prevention_succeeded = kIOReturnError;
+        std::cout << "Enabled display sleep and OS sleep." << std::endl;
+    }
+    return true;
+}
+
+#endif // defined(__APPLE__)
+
+}
+
diff --git a/SerialPrograms/Source/CommonFramework/Environment/SystemSleep.h b/SerialPrograms/Source/CommonFramework/Environment/SystemSleep.h
new file mode 100644
index 000000000..0c12fffd7
--- /dev/null
+++ b/SerialPrograms/Source/CommonFramework/Environment/SystemSleep.h
@@ -0,0 +1,42 @@
+/*  System Sleep
+ *
+ *  From: https://github.com/PokemonAutomation/Arduino-Source
+ *
+ */
+
+#ifndef PokemonAutomation_SystemSleep_H
+#define PokemonAutomation_SystemSleep_H
+
+#if defined(__APPLE__)
+#include <IOKit/pwr_mgt/IOPMLib.h>
+#endif
+
+namespace PokemonAutomation{
+
+
+#if defined(__APPLE__)
+
+// Call OS API to prevent screen saver from running and OS from going to sleep.
+// Useful for running some programs like PokemonSV_VideoFastCodeEntry that require
+// the screen to be constantly on.
+class SystemSleepController{
+public:
+    SystemSleepController();
+    ~SystemSleepController();
+
+    // Disable/Enable screen saver and OS sleep.
+    // Return whether the setting is successful.
+    bool prevent_sleep(bool prevent);
+
+private:
+    bool disable_sleep();
+    bool enable_sleep();
+
+    IOReturn m_prevention_succeeded;
+    IOPMAssertionID m_session_id;
+};
+
+#endif
+
+}
+#endif