A survey on gait recognition via wearable sensors
Gait is a biometric trait that can allow user authentication, though it is classified as a “soft” one due to a
certain lack in permanence and to sensibility to specific conditions. The earliest research relies on computer
vision, especially applied in video surveillance. More recently, the spread of wearable sensors, especially
those embedded in mobile devices, has spurred a different research line. In fact, they are able to capture the
dynamics of the walking pattern through simpler one-dimensional signals. This capture modality can avoid
some problems related to computer vision-based techniques but suffers from specific limitations. Related
research is still in a less advanced phase with respect to other biometric traits. However, many factors -
the promising results achieved so far, the increasing accuracy of sensors, the ubiquitous presence of mobile
devices, and the low cost of related techniques - contribute to making this biometrics attractive and suggest
continuing investigating. This survey provides interested readers with a reasoned and systematic overview
of problems, approaches, and available benchmarks.