PSP-Hacks.com

Description:
A keyboard driver for the PSP developed by Fanjita and harleyg. piKey aims at providing full keyboard control anywhere -- games, homebrews, the XMB, etc... Supported are various infra-red keyboards and the ability to wire one via the PSP's serial port (the headphone socket). Have a look at the included user guide (docs/user_guide.html) to get started.