Some of the questions you may want to ask are: Has the strategy been studied?
Qualified researchers who will not profit by the results should conduct the study. The results should appear in respected magazines or journals, not as advertisements. Who has been helped by this strategy? The strategy should be helpful to children with learning disabilities of the same age, sex, and ability as your child.
Can this strategy be harmful to my child? Consider whether the strategy will make your child feel comfortable and more independent or whether using it will make her feel embarrassed 
and different.
Trust your instincts. Many people may offer suggestions for helping your child, including teachers, therapists, and other parents. Listen to what others suggest but remember that you know your child best. Gather information, ask questions, and then use those strategies that seem to be most appropriate for your child.
The following are some examples of different types of assistive technology devices.
Access and Environmental Controls: Devices that allow increased control of the environment or that open up access to things in the environment. This includes electronic controls like switches, special keyboards or mice, and remote controls as well as things that help people get around the community, like ramps, automatic door openers, and Braille signs.
Aids to Daily Living: Special tools for daily activities, like brushing teeth, dressing or eating. This includes adapted utensils, plates and cups, non-skid surfaces, and specially designed toilet seats and shower stalls.

Until tomorrow: The only fence against the world is a thorough knowledge of it.