AAC Devices for Older People

AAC devices are a huge leap forward for stroke and aphasia patients. They allow people to communicate when they otherwise would only be able to use hand signals or mumbling, if that. AAC devices (or Augmentative and Alternative Communication devices) are a very growing field in the speech language pathology world, however, many of these AAC devices are on very high tech platforms. Most people who have had strokes and are affected by aphasia are in a much older demographic than people that are what you would call "tech savvy". I worry that people who would normally never use these devices can learn to effectively use them to help get their speech back. has anyone had any experience with this? I know that if i was having this problem at the age of 75, the last thing I would want to do is try to learn to use some high tech AAC device that will be complicated and add to my frustration of not being able to communicate. I understand that for stroke patients who cannot talk, AAC devices are definitely the way to go, however, I don't know how to navigate the waters of a computer based device targeted to older individuals.