Odesa Signal BlockerThe Odesa Signal Blocker from NorArm is designed to protect mobile phones, car keys, access & credit cards, and other small, sensitive electronic devices from signal interception and theft. It blocks all measurable incoming and outgoing signals, keeping your data safe. The exterior is crafted from the same rugged fabric used in NorArm garments, and the interior is lined with specialized material thatwhen used properlycreates a complete signal barrier.