Towards ecosystem for research and development of electrodermal activity applications, presentation at Academic Mindtrek Conference 2018, October 10, Tampere. Authors Jari Jussila, Niina Venho, Henna Salonius, Jarkko Moilanen, Jari Liukkonen & Mikael Rinnetmäki.

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Towards ecosystem for research
and development of
electrodermal activity
applications
Jari Jussila † HAMK & Moodmetric
Niina Venho, Henna Salonius Moodmetric
Jarkko Moilanen Ministry of Education and Culture
Jari Liukkonen Finnpos Systems Oy
Mikael Rinnetmäki Sensotrend Oy

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Electrodermal activity or galvanic skin response
has been applied in psychophysiological research for over 100 years

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Research Goal & Need
• The goal is to speed up research and development of electrodermal
activity applications based on wearable device measurements
• An ecosystem model is proposed that includes open data, open
source, application programming interface (API) and software
development kit (SDK) as central components
• Whereas APIs and SDKs are essential for developers, open source
software and open data and are considered important for
researchers for e.g. four specific reasons (Pfenninger et al. 2017):
1. Improved quality of science
2. More effective collaboration across the science-policy boundary
3. Increased productivity through collaborative burden sharing
4. Profound relevance to public debates

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Ecosystem Model
• The data from the wearables is
stored to Application(s)
• Application developers create
new Application(s) using SDK
• Cloud platform reads data from
Application(s)
• Partner API enables individuals,
researchers and corporate
users to access the data and
build new applications.

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Ecosystem Model: SDK & API as Central Components
Moodmetric
smart rings
Moodmetric Application
FSenSync Application (Förger et al. 2018)
Moodmetric Cloud Platform
Kalevala Jewelry
smart rings
SDK
Other Platforms
Partner API

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Case study of the Moodmetric smart ring
Mobile Application
Column Variable Description
1 user_id Identification number for the
user.
2 ring_id Identification number for the
smart ring.
3 time Time in milliseconds starting
from the date 1.1.1970.
4 scrn Activations per minute / skin
reactions per minute. This
integer typically variates
between 0..20 with a typical
rate of ~3-4.
5 mm MM index.
6 scl Raw level of conductance of
the skin. The unit is micro
siemens (μS) and the value
typically varies between 0.2-
20 μS.
7 steps Number of steps.
Data log description
Cloud platform data export
Open source software data export Diagrams from open data

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Discussion and conclusions
• Successful platforms of the future provide valid, interesting and timely
data. They enable easy access and possibility to combine external data.
Open interfaces and SDKs provide a way to have data easily available on
one or several platforms.
• One key driver of any ecosystem is an application developer community.
Focus on Business to Developer (B2D) with product level tools such as an
SDK would most likely lower the barrier to entry and boost ecosystem
growth.
• Providing just an SDK for developers is normally not enough. Access to
offered application development tools and support should be one stop
shop for application developers. Offering a simple developer portal with
code and use case examples, SDK, documentation would be the
beginning of developer program, which is needed in B2D marketing