How to choose element sizes for novel interactive systems

Interfaces for many new interactive systems lack useful adaptation towards the properties of those systems. Users and designers used to use the same system. This is often no longer the case and it is hard for designers to know what implications their design decisions have. We study the two main components of interaction performance, input and perception, with regard to how performance can be transferred from a reference system to a target system. We show how to calculate element sizes that allow near identical perceptual and input performance across systems.