程序实现的功能是：使用一个带有GPS接收器的Windows Mobile移动电话，创建一个简单的基于SMS短信的跟踪程序。这样的程序已经有了一些商业程序（定位一个人或者设备的所在位置）和个人程序（指示一下你朋友的位置，然后计算出相互的距离），此程序的目的就是对其所需的所有技术进行探讨。它会通过GPS设备得到GPS信息，然后把这些信息通过短信发送给电话主人或朋友。涉及到技术有：GPS设备交互（不需要通过其他应用程序得到GPS数据），获得当前GPS位置，发送短信。-The program features: Windows Mobile mobile phone use with a GPS receiver, create a simple SMS-based tracking program. This program has been a number of business processes (positioning the location of a person or equipment) and personal program (indicating the location of your friends, and then calculate the mutual distance), the purpose of this program is its all the technologies needed were discussed. By the GPS device to get the GPS information, the information can then be sent via SMS to phone the owner or friends. It comes to technology: the interaction of the GPS devices (do not need to get GPS data from other applications), to get the current GPS position, send text messages.