To install UPDD and enable gesture fuctionality, follow these steps:


1. Ensure macOS is updated to version 15.6 or later.


2. Copy 'USBTouchSimulatorHelper' to the Applications folder.


3. Open System Settings > Privacy & Security.


4. Under Input Monitoring, add and enable 'USBTouchSimulatorHelper'.


5. Under Accessiblity, add and enable 'USBTouchSimulatorHelper'.