Anyone know if it would be possible to mod a Nokia 3587i for an
external Keypad?

The idea is to use the DKU-5 port to connect an external "large"
keypad, preferably with call and end buttons. :-)

Or a keyboard for messaging for example. Like the fold out keyboards
for the Palms. Actually more interested in the number pad.

I was originally thinking of a DKU-5 to USB -- USB Keypad but I guess
that wouldn't work for several reasons including power.

See More: External Keypad mod??