If you want to protect your PDF files and ensure they can only be opened on a specific hard drive or USB drive, you can use hardware-based DRM. One of the most reliable ways to achieve this is by obtaining
How to Share PDFs Securely with Permanent Links and QR Codes Using VeryPDF DRM Protector
How to Share PDFs Securely with Permanent Links and QR Codes Using VeryPDF DRM Protector Sharing PDF documents securely online is essential, especially when you need to ensure that your document is accessible only by authorized users and remains safe