Method, apparatus, and system for countering screen capturing based on watermark related to device identification code

An information processing device that inserts a watermark during screen capture, comprising:

• a processor with computational capability;
• a memory connected to the processor;
• a device identification unit associated with the processor, which acquires a device identification code for the information processing device and stores it in the memory;
• a capture detection unit associated with the processor, which detects a screen capture attempt on the information processing device;
• a watermark insertion unit associated with the processor, which inserts a watermark into captured screen data stored in the memory;
• and
• an association data generation unit associated with the processor, which generates association data associating the watermark with the device identification code and records it in the memory.