iPhone iPod Plus

Some creative engineers perceptive Development have successfully connected to an infrared keyboard iPhone without having to unlock the system (jailbreaking). Almost everyone has tried to connect a keyboard to the iPhone through the dock connector, Wi-Fi or Bluetooth .

Unfortunately, these methods fall into conflict with the restrictive SDK from Apple. However, the audio port no. The circuit ($ 20) accepts the infrared signal from the infrared keyboard or other USB devices and sends the signal through the audio port using a change of frencuencia for each key, ie converting keystrokes into sounds