Method and device for identifying a peripheral device from a digital content

A master device to transmit a digital content to a peripheral device, said master device being located at a user end and being configured to be connected to a server located at a back end, said master device comprising:

• a data interface configured to receive, from said peripheral device, at least peripheral identifier;
• a mark generator configured to generate a first mark as a function of said peripheral identifier and a code, the code being generated from event data that includes at least a master device identifier and transaction information related to the digital content;
• a watermarking unit configured to watermark said digital content using at least said first mark;
• and
• a controller configured to instruct the watermarking unit to watermark said digital content before transmitting said digital content to said peripheral device,
• wherein said peripheral device is connected to said master device through an HDMI or DTCP connection, and the peripheral device is a rendering device.