The Signal Blocking Key Pouch from Ocean and Earth, can be used with your key vault to block the close proximity sensor in your keys, making sure your car stays locked while the key vault is attached to your car. Features: For close proximity car keys Constructed using technical materials that block signals from close proximity car keys Designed for use inside KEY VAULTS INSTRUCTIONS: Lock your car Place proximity car key inside pouch Seal pouch, then place inside a key vault Lock key vault
