NTU IoT Sensing Group
We are a research group based in the School of Computer Science and Engineering, Nanyang Technological University. We focus on the research, design, and evaluation of networked, energy-efficient, and secure sensing systems found in the Internet of Things (IoT) and its AI-empowered generation (AIoT). Our research has two main sub-directions of IoT sensing systems/applications and security/privacy of AIoT sensing. In the first sub-direction, with a strong experimental focus, we study a number of sensing modalities (e.g., powerline radiation, radio frequency, acoustics, image, thermal, and energy), exploit them to construct system functions and applications. In the second sub-direction, we study the security and privacy of AIoT sensing systems that use machine learning to process the sensed data. Due to the immediate application potential, our research has been funded (or co-funded) externally by government authorities and companies in the ICT, energy, and manufacturing sectors.

Featured recent research

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[IEEE ICDCS'20] Attack-Aware Data Timestamping in Low-Power Synchronization-Free LoRaWAN
Maintaining tight clock synchronization of LoRaWAN end devices for data timestamping is costly due to limited bandwidth. We show that timestamping based on uplink frame arrival time at the gateway is efficient but can be insecure. We design a gateway added with the RTL-SDR to analyze the bias of the uplink carrier frequency to improve the security of gateway-side data timestamping.
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[ACM MobiCom'19] Towards Touch-to-Access Device Authentication Using Induced Body Electric Potentials
We design a device authentication system in which the user wearing a token device can be granted access to indoor IoT objects that the user touches. Our design exploits the complex time-periodic electric field generated by the powerlines distributed in the indoor space and the coupling between the field and the human body.

Call for undergrads!

We have a good history of success in working with undergraduate students. We nurture them towards pursuing research. Visit the “Undergraduate achievements” page for the details and opportunities.