In this paper, we present a smart piggy bank that connects a traditional piggy bank to on-line bank account. In order to detect saving behavioral patterns, we used a simple nee- dle switch that transfers information of inserted coins to the smart phone application through Bluetooth. The applica- tion helps the parents make a decision to transfer pocket money to the bank account linked to the smart piggy bank. We expect the proposed system to be able to collect finan-cial big data related to saving behavior and to provide new financial services.