Being able to hold information within their working memory for a few seconds results in the ability to scan the environment and overlap images. Scanning the environment tends to make people safer but at the same time more vulnerable. The person will match to a sample until fatigue sets in. On-site, individualized examination of what the person wants to do is very important in trying to safely fit these people into the community. Compliance and personality characteristics also need to be considered. Living alone and driving are usually the main questions.