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2. Electromagnetic shielding - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_shielding

   Electromagnetic shielding cages inside a disassembled mobile phone. In electrical engineering , electromagnetic shielding is the practice of reducing or redirecting the electromagnetic field (EMF) in a space with barriers made of conductive or magnetic materials.

3. Faraday cage - Wikipedia

   en.wikipedia.org/wiki/Faraday_cage

   A Faraday cage or Faraday shield is an enclosure used to block some electromagnetic fields. A Faraday shield may be formed by a continuous covering of conductive material, or in the case of a Faraday cage, by a mesh of such materials. Faraday cages are named after scientist Michael Faraday, who first constructed one in 1836. [1]

4. Cellphone surveillance - Wikipedia

   en.wikipedia.org/wiki/Cellphone_surveillance

   Intentionally hiding a cell phone in a location is a bugging technique. Some hidden cellphone bugs rely on Wi-Fi hotspots , rather than cellular data, where the tracker rootkit software periodically "wakes up" and signs into a public Wi-Fi hotspot to upload tracker data onto a public internet server.

5. Electronic article surveillance - Wikipedia

   en.wikipedia.org/wiki/Electronic_article...

   These are typically large paper bags that have been lined with multiple layers of aluminium foil to effectively shield the RF label from detection, much like a Faraday cage. A similar situation would be the loss of signal that a cell phone suffers inside an elevator: The electro-magnetic, or radio waves are effectively blocked, reducing the ...

6. Mobile device forensics - Wikipedia

   en.wikipedia.org/wiki/Mobile_device_forensics

   Mobile device forensics is a branch of digital forensics relating to recovery of digital evidence or data from a mobile device under forensically sound conditions. The phrase mobile device usually refers to mobile phones; however, it can also relate to any digital device that has both internal memory and communication ability, including PDA devices, GPS devices and tablet computers.

7. Electromagnetic interference - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_interference

   In the United States, the 1982 Public Law 97-259 allowed the Federal Communications Commission (FCC) to regulate the susceptibility of consumer electronic equipment. [ 10 ] [ 11 ] Potential sources of RFI and EMI include: [ 12 ] various types of transmitters , doorbell transformers, toaster ovens , electric blankets , ultrasonic pest control ...