However, several technical issues still need to be overcome, such as cross-sensitivity to other physical measurands (e.g., temperature), as well as more cost-efficient optical signal processing units. The possibility of integrating wireless data transmission capability (WiFi technology) into the FOS system, providing in this way portability (making it easy to use) to the biomechanics testing, is something that still needs to be explored. Also, a self-supported electrical energy supply, necessary to power all the optoelectronic circuits of a FOS system, is an engineering issue that needs to be solved.

With this humbly written contribution, the authors hope to have contributed to the advancement of knowledge about FOSs in biomechanics applications and to stimulate others to pursue their investigation in this multidisciplinary field.