Low Cost and Convenient Security System Using WIFI Signal

Technology #ua17-130

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Min Liang
Postdoctoral Resarch Associate I, Electrical and Computer Engr
Hao Xin
Professor, Electrical & Computer Engineering
Managed By
Robert Sleeper
Licensing Manager (520) 626-4604

Title: Low Cost and Convenient Security System Using WIFI Signal


Invention: The invention is a security system using WIFI signals through using multiple WIFI routers and one or multiple WIFI receivers. The security mode outputs a quadrature phase shift keying (QPSK) modulated signal to WIFI receivers mounted at different locations. When there is movement in the area, the signal shows a large variation. If identified as a threat, an alarm will sound and the owner will be notified.


Background: In 2013, the average cost of a new home security system ranged from $600 to $1200 with monthly monitoring plans averaging around $30. With over 2,000,000 burglaries occurring in 2012, each with an average of $2,120 taken, there is a need for reliable and cost-effective security systems for consumer peace of mind.



  • Home security
  • Offices/business security



  • Reduces cost to under $100
  • Uses existing infrastructure and equipment


Licensing Manager:

Bob Sleeper


(520) 626-4604