**2. Materials and Methods**

The experimental procedure, material, and methods are summarized in Figure 1 (expired on ISO/IEC 19795-1:2019 [29]). For the research and implementation of a complete wrist VBR contactless system, the following elements have been defined:


The following units of this section detail the procedure for obtaining these two elements: hardware (capture, processing, and storage devices) and software algorithms (TGS-CVBR®: capture algorithm and PIS-CVBR®: storage, signal processing, comparison, and decision).

**Figure 1.** Components of the experimental wrist VBR system.
