Imperial College London


Faculty of MedicineDepartment of Surgery & Cancer

Senior Lecturer



+44 (0)20 7594 0806benny.lo Website




B414BBessemer BuildingSouth Kensington Campus






BibTex format

author = {Sun, Y and Lo, B},
doi = {10.1109/JBHI.2018.2860780},
journal = {IEEE Journal of Biomedical and Health Informatics},
pages = {987--998},
title = {An artificial neural network framework for gait based biometrics},
url = {},
volume = {23},
year = {2019}

RIS format (EndNote, RefMan)

AB - OAPA As the popularity of wearable and implantable Body Sensor Network (BSN) devices increases, there is a growing concern regarding the data security of such power-constrained miniaturized medical devices. With limited computational power, BSN devices are often not able to provide strong security mechanisms to protect sensitive personal and health information, such as one's physiological data. Consequently, many new methods of securing Wireless Body Area Networks (WBANs) have been proposed recently. One effective solution is the Biometric Cryptosystem (BCS) approach. BCS exploits physiological and behavioral biometric traits, including face, iris, fingerprints, Electrocardiogram (ECG), and Photoplethysmography (PPG). In this paper, we propose a new BCS approach for securing wireless communications for wearable and implantable healthcare devices using gait signal energy variations and an Artificial Neural Network (ANN) framework. By simultaneously extracting similar features from BSN sensors using our approach, binary keys can be generated on demand without user intervention. Through an extensive analysis on our BCS approach using a gait dataset, the results have shown that the binary keys generated using our approach have high entropy for all subjects. The keys can pass both NIST and Dieharder statistical tests with high efficiency. The experimental results also show the robustness of the proposed approach in terms of the similarity of intra-class keys and the discriminability of the inter-class keys.
AU - Sun,Y
AU - Lo,B
DO - 10.1109/JBHI.2018.2860780
EP - 998
PY - 2019///
SN - 2168-2194
SP - 987
TI - An artificial neural network framework for gait based biometrics
T2 - IEEE Journal of Biomedical and Health Informatics
UR -
UR -
VL - 23
ER -