You are trying to use a keylogger for a gaming system, which unfortunately, it's not possible. Yes, the VITA can be loaded with custom firmware, but there is no such thing as keyloggers for this system. In happiest case, you can use Parental Controls if you have a child and want to prevent him from playing, but that's it as close to the keyloggers.
Also, Invisible Keylogger was an application strictly available for PCs.
