In a future world of ubiquitous computing, in which humans interact with computerized technologies even more frequently and in even more situations than today, interface design will have increased importance. One feature of interface that I argue will be especially relevant is what I call abstract relational strategies. This refers to an approach (in both a bodily and conceptual sense) toward the use of a technology, an approach that is general enough to be applied in many different concrete scenarios. Such (...) an abstract manner of approach is relevant, for example, when an interface design for a device to which users are already accustomed is applied to an entirely different device (such as a device used for a completely different purpose). To articulate this idea, I explore the history of keyboards, and consider how the habits of interface with one kind (e.g., piano keyboards) have historically enabled some users to approach other technologies fitted with similar keyboard interface (e.g., typewriters, electronic instrumentation). I conclude by brainstorming ways that abstract relational strategies, applicable to a variety of different devices, will have increased importance in a future world in which computing is even more ubiquitous than today. (shrink)