Be-twin / couple diary for elderly

As people get older, they experience not only physical but also emotional changes. These changes can lead to elderly depression.
Elderly need friends. And one of the closest friend they have are their spouses. However, living busy during their past years, they end up with silence and awkwardness.
'Be-twin' is a couple diary for elderly to enhance or maintain their relationship. It is very intuitive with its book-like looks and usages. Elderly can record their memory and set whether they are going to share their contents or not. If it is allowed to share, they will be transferred to each other when the two diaries are stacked.