This is because it’s hard to know what images or stories will spark a memory and when. Often it’s the things people pass everyday in their lives — landscapes and landmarks — rather than specific moments. Downie’s own grandmother, 97, has been diagnosed as suffering from dementia. And for her it was not photos of her sister’s wedding that were easy to recall, but photos of bus stops in Glasgow.

wired.co.uk/news/archive/2014-06/06/dementia-memory-box-platform