VIRTUAL DIGITAL HOLOGRAM

Virtual Digital Hologram (VDH) is HexaLock 4th generation copy protection introduces a new advanced security element which is being applied to both CD-ROMs and CD-RX, v. 4.0 discs.

VDH technology has been in use for over a year exclusively within the military, government, financial and medical sectors. To date, CD's containing VDH technology have proven to be 100% resistant to all copying methods known to HexaLock and its customers.

The VDH is a digital hologram, formed by special bit patterns that provide a Hologram effect to the CD/DVD reading device. The VDH is not an optical hologram, however, this is a good model to help explain the way VDH works. By looking on an optical hologram from different angles, the human eye can see different views. If you take a picture of an optical hologram, the 3rd dimension disappears. The result is a 2D picture that represents the view from a specific angle. The VDH is very similar. When making a copy of an original protected disc the VDH pattern will disappear. Instead, a static bit pattern will appear. The HexaLock software will detect absence the VDH and act accordingly.

The 4th generation copy protection provides both outstanding resistance to copying software and equipment and also increased compatibility and performance with all tested hardware and software configurations.