You can buy USB keyboards with just the numeric keypad. That sounds like what yo...

icebraining · on Sept 23, 2011

Does the iPhone have an host USB port? I don't think it does.

There are bluetooth numberpads, though, those should work. Something like this: http://store.apple.com/us/product/H0321VC/A (just found it, never used)

randomdata · on Sept 23, 2011

From what I gather, the iPhone does have a host USB port (assuming you have the Camera Connection Kit to provide the connector), but it is not enabled in iOS.

iOS on the iPad is said to have USB keyboard support. I don't have the necessary hardware to back that up though.

Terretta · on Sept 23, 2011

You can plug a variety of USB gear to the "camera connection kit" on iPad and it just works, from USB headsets (audio + mic) to keyboards.