Another example of controlling an Arduino's digital I/O pins has recently appeared - the "iArduino" application for Apple iPod, iPhone and iPad devices. It is a two-part procedure, you need the software on your Apple device and also the matching sketch uploaded onto your Arduino+Ethernet shield combination board (or EtherTen). You add the IP address for your Arduino in the sketch, then enter this and the port number into the iDevice and away you go. Here's a long video running through the process:
When putting together your next Internet-enabled Arduino project - save time, space and money with the Freetronics EtherTen. Apart from being fully Arduino Uno-compatible, it has onboard Ethernet, microSD socket, full USB interface (so you don't need a costly FTDI cable just to upload a sketch!) and supports optional Power-over-Ethernet.