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The purpose of this research was to design and develop a smartphone-based tourism navigation
system in Ratchaburi province as a tool to support tourism in Ratchaburi province. The tourism navigation
system in Ratchaburi province are divided into two parts: 1) Data Management System: back-end of the
application has a database on a website for data management services. The database is the source of Ratchaburi province tourism information that connects to the application. 2) Tour Ratchaburi application: offers extensive tourist information in Ratchaburi province, including leisure attractions, restaurants, shopping places and souvenirs, news and tourism events in Ratchaburi province.The users can use in finding accommodations and tourist services. It also connects to Google Maps to guide tourists to various locations as their desires. The results of the performance evaluation of the tourism navigation system showed that the satisfaction of users who took an official tour using the application at the high level ( X = 4.23, S.D. = 0.50). 92% of the users were satisfied with the performance of Smartphone-based tourism navigation system in Ratchaburi province.
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