一般收費停車場，在有管理員時，使用遙控器控制停車場的柵欄機，沒管理員時，可以使用悠遊卡或停車票卡，但悠遊卡要先儲值，停車卡要先準備零錢，因為使用悠遊 卡或停車票卡的建置成本很高，所以一般停車場，都給外包廠商經營停車場。 本研究開發一手機 APP ，使用無線通信方式與停車場之一控制器連線。當停車使用者欲進場停車時，按APP 之“進場停車”便可以通知控制器開啟柵欄機，同時，當停車使用者欲停車出場時，按下APP 之“付費出場”便可以進行手機自動信用卡付費，在付費成功時，通知控制器開啟柵欄機。其中，控制器成本低廉，設計簡單，使用獨立電源，不需更改原柵欄機任何電路。控制器放柵欄機附近，插上電源即可使用無線通信方式開啟或關閉柵欄機。另外，使用者APP 設定付費資訊，可以選擇長期租約通行碼，或信用卡，或手機小額付款，信用卡要先輸入卡號資訊，手機小額付費要先輸入電話號碼。本研究系統操作簡單， APP 付費安全便利，停車者不需事先儲值，也不需準備零 錢排隊繳費，且可以與停車場舊有系統共用，包括悠遊卡或停車票卡。以使用信用卡付費為例，付費機制透過使用者手機上網刷卡，可以保障使用者之安全消費。

For general parking lots, the fence machine is controlled by a remote while there is a conservator around. If not, we can use Easy card or by ticket to enter parking places without artificial assist. However, there can be drawbacks on how to pay parking fees such as the money storage in Easy card and loose change for tickets. On the other hand, the building cost of these systems is absolutely high, industries therefore tend to lay it out to outsourcing vendors. Our project develops an APP to communicate with parking controllers using wireless technique. When car users are about to enter the parking lot, simply press the “Enter Parking” button in the APP to inform the controller and then the fence will open up. Also, if car users tend to exit, press the “Pay & Exit” button and the smartphone will undergo a payment process which we will introduce below. Once the payment is confirmed, the controller will be informed again to open up the fence for car users to exit. The controller itself is very cheap to purchase and to construct and it doesn’t need to change any of the fence’s circuit. We can hence control the fence by putting the controller beside it and plug in the source. Before undergoing the payment process, we need to set up the payment information in the APP, in other words, how to pay. There are three ways which are long-term lease pass code, credit card, and cellphone small payments. Credit card requires the user’s credit card number information and cellphone small payments requires cellphone number. The operation of this system is simple and the APP payment is both safe and convenient. Car users don’t need to store money in their Easy card or prepare loose changes anymore. In addition, the new payment system can integrate with original systems as well. For example, the credit card payment can guarantee car users a more safe purchase through online credit card payment using cellphones.