CD-COPS versions

Here is a list of various standard types of CD-Cops program protection. All can be delivered to protect either 16-bit or 32-bit programs. In all cases CD-Code must be entered first time the protected program is run, unless a special "Codefree" production process is used. Here the CD-Code is embedded on the CD-ROM, but only certain factories can handle this process. If you need something even more special then look under Custom Solutions.


Key-CD checked every time program is being started.

Enhanced version:

Object module linked in various places can perform additional key-CD checks upon request. Good for ultimate security but requires some implementation.

Machine Install version:

Key-CD checked during installation and program is then machine installed. It will then run from that machine without key-CD. Can be installed several places from original CD!

Hard expiry version:

Key-CD checked every time program is being loaded but refuses to run after a certain preselected date. This date is absolute ie. not to be confused with relative expiry (xx days after installation). Can be used for demo purposes.

Regular key-CD insertion:

Key-CD checked only once in a while. Comes with a warning a number of days before it expires - original CD must then be inserted. Insertion interval can be chosen - typically 2-4 weeks.

Network security:

See NetCops


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Link Data Security has developed copy‑protection and security solutions for more than 30 years. We support Windows, Mac and Linux on almost any electronic media. Our copy-protection is an investment, not a cost.

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