Rajalakshmi Nandakumar

Ph.D. Student @ Networks and Mobile Systems lab, UW

About Me

I am a 5th year Ph.D. student at the Paul G. Allen school of Computer Science, UW. I work in the Networks and Mobile Systems Laboratory advised by Prof. Shyamnath Gollakota. Previously, I was a research assistant in the Mobility Networks and Systems group at Microsoft Research, India. My research focuses on leveraging the ubiquity of smart devices with wireless sensors, to enable novel applications that can improve the quality of life. Beyond developing new techniques and algorithms, I also strive to deploy our technology at a large scale to make a difference in people's lives.


Charging a Smartphone Across a Room Using Lasers. IMWUT 2017

Vikram Iyer, Elyas Bayati, Rajalakshmi Nandakumar, Arka Majumdar, Shyamnath Gollakota

CovertBand: Activity Information Leakage using Music. IMWUT 2017

Rajalakshmi Nandakumar, Tadayoshi Kohno, Alex Takakuwa, Shyamnath Gollakota

Project website

Unleashing the Power of Active Sonar. IEEE Pervasive Computing 2017

Rajalakshmi Nandakumar, Shyamnath Gollakota

FingerIO: Using Active Sonar for Fine-Grained Finger Tracking. CHI 2016

Rajalakshmi Nandakumar, Vikram Iyer, Desney Tan, Shyamnath Gollakota

Project website

Contactless Sleep Apnea Detection on Smartphones. MobiSys 2015

Rajalakshmi Nandakumar, Shyamnath Gollakota, Nathaniel Watson

Project website

Wi-Fi Gesture Recognition on Existing Devices. CoRR abs/1411.5394 (2014)

Rajalakshmi Nandakumar, Bryce Kellogg, Shyamnath Gollakota

Feasibility and Limitations of Wi-Fi Imaging. Sensys 2014

Rajalakshmi Nandakumar, Donny Huang, Shyamnath Gollakota

Dhwani: Secure Peer-to-Peer Acoustic NFC. Sigcomm 2013

Rajalakshmi Nandakumar, Krishna Kant Chintalapudi, Venkat Padmanabhan, Ramarathnam Venkatesan

Centaur: Locating Devices in an Office Environment. MobiCom 2012

Rajalakshmi Nandakumar, Krishna Kant Chintalapudi, Venkat Padmanabhan


  • CoMotion Graduate Student Innovator award 2016
  • Best Presentation award Microsoft Student summit 2016
  • Honoroable Mention CHI 2016
  • Madrona Venture Group award 'Runner up' for ApneaApp 2015
  • Best paper nominee MobiSys 2015
  • Best Presentation award SenSys 2014