The available support rendered by the technology can be classified as falling under three categories, depending upon the extent of support required and the available financial resources2. This includes Low, Mild and High assistive technology devices. Low assistive technology devices include support gadgets that do not involve electronics and do not require a battery for operation. Such devices easy to operate and are low in cost. Mild support strategies rely on simple electronics. These devices are not heavily dependent upon technological advancements. High assistive devices are electronically sophisticated. These employ modern day techniques as image processing, signal analysis and logic design to achieve the desired functionalities. Such devices require a processing unit. As a result, these are designed to work on a computer or in conjunction with an embedded processor or a microcontroller. The cost of such devices is significantly high, as is the complexity and effort involved in development process.
The task at hand is to investigate three assistive technology devices and to e