service become common. Nowadays, there are many kinds of
library mobile services, including mobile website, and
electronic resource mobile service, but not of all libraries
provide book-finding navigation service. Although there are
numerous technology can achieve by using radio frequency
of geographic information systems (Geographic Information
System, GIS) , such as Radio Frequency Identification
(hereinafter referred to as “RFID”) technology [4] or the use
of Wi-Fi sensor [5]. But the cost of building a system and
maintenance are too high to the libraries. Only few libraries
can afford such service.