Nuki says the Keypad 2.0 is splash and dust-proof and no tools are needed to attach it to the wall – you simply remove the 3M tap on the back and attach it to a smooth or grippy surface ...

NumPad Remote is a download for iOS and Mac OS X that turns your iOS device into a portable number pad. To set it up, you need to download both the free desktop client and the $2.99 iOS app.

Not only can the Numpad be magnetically attached to either side of the Tizona TKL, but it also ships with its own extension cable, so you can place the G2N-P anywhere on the desk.