Wandering is also a concern for children with autism, often very young children. They are often non verbal and drawn to water (0) which compounds the danger. Tracking solutions like AngelSense which is designed for children with special needs (with sensory sensitivity in mind so they don't strip it off) might also work well for people with dementia or Alzheimer's.

(0) https://www.wfmynews2.com/article/news/local/verify/verify-a...