• HOTELS/MOTELS: If you've ever spent the night in a motel, NO DOUBT, you've seen one of these shields attached to the back of the TV, cable box, VCR and DVD player.  What are they used for?  To prevent you from checking out and taking the equipment with you.  Sure, you can cut the cable but that will set off an alarm in the lobby.  But, what if you want to hook up a video game for the kids?  Forget it!  You can't get either your fingers or a wrench up inside the shield to unscrew the connector - Bottom line: you're screwed!
• CABLE COMPANIES may use these shields for two reasons: (1) to prevent the subscriber from stealing cable services and (2) as a deterrent to satellite installers wanting to use existing cable lines.
• SATELLITE INSTALLERS may use these shields to block a do-it-yourselfer.  Let's face facts: Return service calls are the same as money in the bank.

1⅛" Die-Cast Metal Security Shields - Screw-On - 0.58" Wall Thickness - ⅝" Diameter - Blocks Wrench Access - Protects F Connectors on Traps, Ground Blocks, Satellite Receivers, VCRs, DVDs, Cable Converters,  and TVs From Unwanted Tampering.

Buy the security shields here or buy the tool you need to remove the shields here.