In the US, if I lost something outside my home, I didn't expect I would get it back. There's a saying every child learns - "Finders keepers, losers weepers". Not so in Japan. If you drop something or leave something behind, it will often be right where you left it, or it will be turned in to the koban (police station). People are very honest about things that do not belong to them.
Recently, the police have become overwhelmed with all of the things turned in. According to the National Police Agency, the number of things turned in to the police jumped from 12.72 million in 2007, to 27.96 million in 2016. In 2007, the previous Lost Property Act was replaced by a new law with the same name, allowing police to dispose of lost items after three months rather than the previous six months. This is based on the fact that most people claim items within three months. In addition, cheap items like umbrellas could be sold off if no one claimed them in two weeks.
Ted left his iPhone on the bus in Sapporo and it was turned in. He was able to retrieve it the same day. I forgot my panda hat on the bus in Sapporo and was very worried about getting it back, but it too was turned in to the bus station office and I got it back the same day.
What is the situation where you live? Is it the finders keepers rule or do you get it back, like in Japan?