Accessing someone’s WhatsApp remotely without their device is tough due to strong security measures. End-to-end encryption ensures only the sender and receiver can read messages, making intercepting data useless. Technical barriers include device verification, two-step authentication, and app-specific security settings. However, for educational purposes, tools like mSpy can help monitor WhatsApp activity legally if you have consent. It works by tracking the data stored on the device (not hacking). Check it out at https://www.mspy.com/ for a practical solution.