External IR Keyboard Added To iPhone Without Jailbreaking

Hackers have managed to make an external IR keyboard play nice with an iPhone without having the need to jailbreak the device in the first place – after all, having a keyboard will come in handy if you’re one who have plenty of text messages and emails to reply wherever you go. This is made possible by using a custom connection constructed just for the headphone jack, since the latter is one of the few interfaces that is left open in the official SDK. The hackers behind this tweak built a microcontroller that converts input from an external Targus IR keyboard into a format where the iPhone’s headphone jack understands.