Wireless Signal Protection Device

At a Glance

Researchers at Colorado State University have developed a device to safeguard electronic devices from tampering or war-driving and to prevent interference between two or more wireless signals. This device uses novel 3D printed metal/plastic composite shielding to control the distance and direction of wave signal readability.  The novel composite shielding is capable of blocking EMI and RFI readability except in the direction and from the distance desired. Both traditional design and generative design approaches are used for the shielding architecture.


In the realm of modern electronics, protecting devices from unauthorized access and ensuring the integrity of wireless transmissions are paramount concerns. Traditional methods such as password protection may not suffice, leading to the need for physical protection against tampering and interference. This new technology addresses these challenges by providing a physical barrier that shields electronic devices from external interference, enhancing their security and reliability.


The wireless signal protection device features a casing made of electrically conductive materials, such as metals or conductive polymers, designed to control the readability of transmitted waves. By embedding these materials within the casing, the device effectively blocks unauthorized and/or unintended access to wireless signals, preventing tampering and interference. Moreover, the device allows selective access through apertures in the casing, enabling controlled transmission of signals in specific directions.


  • Improved security: Prevents unauthorized access and tampering of electronic devices.
  • Enhanced reliability: Minimizes interference between wireless signals, ensuring consistent transmission.
  • Selective accessibility: Allows controlled transmission of signals in specific directions, optimizing communication.
  • Versatile applications: Suitable for various electronic devices and environments, including industrial and residential settings.
  • Accommodates multiple design approaches: traditional design and generative design.


  • RFID technologies and similar
  • Shielding WIFI based sensors and Bluetooth systems.
  • Technologies commonly used in smartphones.
  • IoT devices, including doorstep surveillance devices.
Last Updated: March 2024
Illustration of sensor security for phones

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Steven Simske
Sean Lahti

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