No More thing left behind!
"oops!I forget I forget what to buy."
"I forgotten the membership card... I can't go into an institution."
"Although it is traveling abroad from tomorrow, preparation is uneasy in completion."
If there is this "thing-left-behind checker", it is already safe.
Let's register doing into this application before going out, what is brought, and.
It is not troubled by checking before going out each time by a thing left behind any longer.
It is useful application applicable also to little task management according to usage.