Forensic watermarking is a technology that deters piracy by providing means to copyright owners to trace back the identity of the original recipient of a video in case it appears on unauthorized sharing platforms. Historically, its use has been somewhat limited to professional environments e.g. for pre-release material movie distribution and in digital cinemas. MovieLabs recently released a specification that mandates the use of such forensic watermarks to deliver premium UHD content, thereby opening doors for mass market deployment of watermarking in CE environment. After reviewing elementary watermarking concepts, we will first detail the two mainstream ‘families’ of watermarking systems that are commercially available today. Next, we will survey the three principal content delivery channels (physical media, OTT, broadcast) and discuss the impact of introducing forensic watermarking on the overall system architecture depending on the characteristics of the algorithm. Finally, we will highlight UHD-specific challenges that will need to be addressed by watermark vendors to support various features (4k, HFR, HDR, scalable coding).