PPC’s new “Locking HDMI Cable” purports to offer the “highest quality HDTV”, a claim that is true only by dint of the fact that a disconnected HDMI cable would provide a television signal of the lowest quality. (Indeed, there is none more low than none.)
Should you be afraid of spurting errant pixels all over the back of your television and require an HDMI cable with a pushbutton lock, PPC sells a three-foot length for $49. A basic three-foot flat ribbon HDMI sells for around $5 at Monoprice.com, but does not include a lock — and in situations where it may be merited, such as kiosk installations or homes with grasping children unafraid of the lash, the 10x premium may be worth it.
Locking HDMI cable company page [PPC-Online.com]