Isn't that how he hacked his ps3? Now it's just a simple little file to install, which you can install via:
Android phone
nokia n900 phone
iPhone
Ti-84 Calculator
USB
That motherboard looking thing
Yes, that pic is his hard hack for the PS3 from geohotz
No, the little file is a port from the PSJailbreak code (why is crazy!) called PSGroove, geohotz had nothing to do w/ them. You can basically run it w/ any usb micro controller device... Here is a demo of an iPhone putting commands for the PS3....
http://www.youtube.com/watch?v=YyyHRPNahOQ&feature=player_embedded