I was talking about me. No sarcasm here. I need a keypad for work. I enter long numbers all day long and my left hand is needed to tab to right places so it can be input.
What you really need is a small keypad with a tab key [in a useful spot]. I don't think anyone makes that, but it sounds like what you need. One nice thing about DIY - you can choose the layout and keys that make sense for your workflow.
Remember there is no rule the says you only need one keyboard, or even that the keyboards have to be connected to the same window (I actually had it working once where I had two keyboards that went to different windows - but it was tricky to setup and not everything worked - in the end I didn't find it useful but YMMV)
Yeah, that doesn't work. I need my left hand to tab to right places and right hand to enter long digit strings on a keypad. Pad 100% necessary for good output rate.
On the chance you're not aware, they do make a pretty cool little matching numpad. It's not quite as nice as having a full size keyboard (I wish they docked together with magnets or something), but for just over a hundred bucks all in, it's a decent compromise.