The GPS Shield is base on the ublox's NEO-6M receiver module , and the footprints is compatible with Arduino/MEGA boards. The regular GPS pins (RX, TX) can be connected to D0-D7 of Arduino. Support software SerialPort and Micro SD card interface.
It's very easy using. You just need read SerialPort and then will get the GPS data. It also could use with GPRS Shield(click here to know how to use GPRS). So you can send GPS data to phone by SMS, then you can get the position of the GPS Shield.
The GPS Shield module interfaces to the customerâs application via one serial port, which uses CMOS voltage levels. support 3.3V / 5V IO operating. That's means 100% all Arduino main board compatible.