Faraday Enclosure
Definition
A shielded container or bag that blocks all radio-frequency signals including Wi-Fi, Bluetooth, cellular, and Z-Wave. Used at scene to prevent remote wipe commands, firmware updates, or data deletion from reaching a seized IoT device before acquisition.
- Function
- Blocks Wi-Fi, Bluetooth, cellular and Z-Wave signals
- Used on
- Seized IoT devices at the scene
- Prevents
- Remote wipe, firmware update, or remote data deletion
- Form factor
- Shielded bag or rigid container
Common questions
Why is a Faraday enclosure used specifically for IoT devices rather than just phones?+
Many IoT devices maintain a persistent cloud connection and can accept a remote reset or firmware push at any time, even without a user actively triggering a wipe, so isolating the device the moment it is seized closes that window regardless of who might try to interfere with it.
Does placing a device in a Faraday enclosure affect its battery or state?+
A shielded device typically increases its radio search power trying to reconnect, which can drain the battery faster, so responders often combine Faraday isolation with power management, keeping the device powered externally or documenting battery level before and during isolation.
Related terms
- Chip-Off Acquisition
- A physical extraction method in which the flash memory chip is desoldered from the device's circuit board and read directly with specialised...
- Cloud Backend
- The vendor-operated server infrastructure where IoT device data is stored, processed, and made accessible via companion apps. The cloud backend is often...
- Companion App
- The smartphone application that pairs with an IoT or wearable device, caches recent sensor data locally, and relays data to the cloud...
- IoT (Internet of Things)
- The category of networked physical objects embedded with sensors, processors, and communication modules that collect and transmit data without continuous human interaction....
- Wearable Device
- A subcategory of IoT device worn on the body, typically a fitness tracker, smartwatch, or medical monitor. Wearables generate high-frequency sensor data...