CHIJ St Nicholas Girls’ School students seen here with the SENSg device. These students took part in the first pilot phase on 26-27 May 2015 (Photo: CHIJ St Nicholas Girls’ School)

Eighty students from CHIJ St Nicholas Girls’ School were the first batch of students in Singapore to use the SENSg device in the pilot phase of Singapore’s first National Science Experiment – Step Out For Science. These students took the sensor along with them as they went about their daily activities over the course of two days. Based on the data collected, researchers from the Singapore University of Technology and Design (SUTD) mapped their travel movements or activity levels. Below are the results of the pilot phase.

Students’ Activity Levels


This graph shows students’ activity levels, which is a record of the number of steps they had taken. The horizontal lines show the hours that students were not active (“not active” is defined as “not on the move”).The gradient lines represent the number of hours that students were active. At the end of the full-scale experiment in December 2015, researchers hope a larger pool of data can yield better insights into the overall activity levels of the school population.

Students’ Mobility Patterns

These travel patterns captured the locations and the distances travelled. Locations could be homes, school, or recreational spots, etc. The SENSg device can identify the modes of transportation undertaken (by sensing the rhythm of a moving train, bus or car). Such data can yield information on the carbon foot print of students and will be useful for road planners and transport operators in their planning of routes and services.

Wi-Fi Connectivity

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This map shows the number of Wi-Fi access points picked up by the SENSg device within a localised area. The darker spots represent greater Wi-Fi access points picked up in the location. Areas without any spots do not represent lack of Wi-Fi connection. It could suggest that students did not travel to these locations during the trial.

Students say…

This experiment was a very meaningful one and was totally worth my time. It has shown me many different features that the advanced technology nowadays is capable of measuring or recording. It has also allowed me to take part and contribute to a nationwide experiment and I have definitely enjoyed myself throughout the entire process. I’ve learnt about physical properties that can be recorded which are pressure, humidity, temperature and the list goes on. It was interesting to see how others tried to guess our activities based on the data recorded. This teaches us that with data, one can infer and form conclusions.
Student, CHIJ St Nicholas Girls' School


I think that the National Science Experiment pilot programme was a very interesting experience. I found the SENSg sensor very intriguing as such a small device can be capable of tracking many different forms of data and we can even transfer this collected data to a website where we can view it.
Student, CHIJ St Nicholas Girls' School

SENSg Device

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Developed by researchers from the Singapore University of Technology and Design,  SENSg (pronounced “SENSE-SG”) measures and stores data on motion, temperature, humidity, atmospheric pressure, light intensity and sound pressure levels. Read

Click here to view photos and videos of the pilot phase