www.aginginplace.com

I accidentally discovered the above website which looks good. The National Association of Home Builders and AARP have developed a designation and certification process called Aging in Place which uses universal design concepts to modify homes so that people who are aging and/or disabled can stay in their homes. The site offers more than construction tips; however, it also had information on a cell phone design and plan designed for an elder. It had lists of resources. It might be a good site to consult if you need or want to make modifications for the person for whom you care.