Hi susan, Thanks for your appreciation. I am glad that the design would be helpful to address the major issue of people with parkinson's disease. Yes, the rollator can be folded. It is designed in such a way that its easy to transport. I did not show the details of folding mechanism in the presentation, but i have considered the portability in design.
This design can work similar to "Paadje - Wearable Gait Assistant". Both designs are on the same lines of providing Visual Cues which can help them in gait training.
Yes, It can be expanded to other older adults as well. Actually the visual cues act as guiding path. So this can build a lot of confidence in an individual in taking steps, particularly in older adults.
As of now, i haven't conducted any tests with the design. I have to make a prototype and conduct user testing.