*3.5. Subjective Reasoning*

We observed the exploratory scheme for subjects during the tactile identification tests. Geometric and semantic identifications were noted whenever the subjects were able to correctly distinguish round and square disks and were able to locate and describe the tactile marker on disks, respectively. Subjects also provided feedback on the improvement of ColorWatch and whether it might be helpful for PVIs or not. They were then asked about challenges in geometric and semantic identifications. A few of them also provided ideas on helping PVI in color identifications after completion of tests.

Generally, the subjects reported the concept and its application through the rotating disks to be proper and easy. The subjective feedback from test participants was as follows;


The participants' subjective feedback about conveying the colors through tactile associations, and the tactile perception is given below. It is stated that many of the participants deemed the color identifications through ColorWatch to be very easy or easy, hence only the critical or imperative responses are provided here:


Subjects felt confident about using the tactile interpretation of color when asked about suggestions for improvements regarding tactile or any other modality as a color perception solution for PVI. The critical comments are as follows:


Finally, subjects' opinion about being the ColorWatch helpful for PVIs is as follows:

• *I'm not sure if there's a product like this, but, if there isn't, it might help.*

