Feeds

Tunable surfaces prevent Wi-Fi leaks

No more borrowing access points

  • alert
  • submit to reddit

Internet Security Threat Report 2014

Last year a man in Canada was arrested for downloading child pornography onto his laptop, but he used someone else's wireless access point to access the illegal material. That same year federal officials accused a man from Michigan of conspiring to steal credit card numbers from the Lowe's chain of home improvement stores by taking advantage of an unsecured Wi-Fi network at a store in Detroit.

In the future, stealing secrets from unsecured networks may no longer be possible. Researchers at the University of Warwick have devised a method of producing tunable surfaces that can selectively block Wi-Fi signals from spilling out of the office.

Dr Christos Mias, in the University of Warwick's School of Engineering, has developed a "dipole grid-based frequency selective surface" to perform this task. This grid of circuitry has the potential to be embedded in any glass window and then tuned to block the selected frequency. The circuit can easily be tuned to block a different frequency if circumstances in the office change without having to remove the window or the circuits.

Mias has already worked with colleagues at other universities and institutions to produce non-tunable FSS configurations on standard domestic glass. Both optically transparent thin-film and opaque micro machined conductors have been employed attenuating the power of the incoming signal, at selected frequencies (above 20GHz) by 100 to 1000 times. ®

Related stories

Vodafone to offer in-flight Wi-Fi
Wi-Fi extensions should breathe new life into 802.11a
SyChip to add Wi-Fi to Windows smart phones

Providing a secure and efficient Helpdesk

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.