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High-bandwidth Digital Content Protection

Basically. If you guys wanna play a HD movie in Blu-Ray or HD-DVD on your beloved computers, you got to have HDCP hardware compliant. 
You got to have a blu-ray or hd-dvd drive, a graphics card with hdcp and a tft with hdcp. If one of those arent HDCP you cant get anything on your screen. 
All of this will only work with DVI and HDMI outputs.
All this means spending more money on your computer lol which is very good for computer shops.