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[2] C Llamas, M A Gonzalez, C Hernandez, J Vegas, Open source hardware based sensor platform suitable for human gait identification, Pervasive Mob. Comput. 38, 154 (2017).
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[3] https://www.arduino.cc/en/Main/Software, last accessed September 5, 2017. [4] https://www.raspbian.org/, last accessed September 5, 2017.

[5] https://golang.org/, last accessed September 5, 2017.

[6] M A Gonzalez, A Gomez, M A Gonzalez, Smartphones in the air track, examples and difficulties, (unpublished).