Running on a dedicated server incorporating the company’s patented Digital Signature Engine, TOLKA Watermark generates and inserts a digital signature specific to each customer’s set-top box viewing interface. Each digital signature is encrypted securely and invisibly within the transmitted program content.

If suspected content is identified as an illegal copy made from a device on a direct-to-home operator’s network, TOLKA Watermark can match the associated content with the unique signature associated with each TOLKA player.