Designing for the Internet of Things
Many IoT systems are tools: they require the user to frame their own problem and configure the system to solve it. Consumers ten ...
9 Cross-device interactions and interusability Claire Rowland Introduction In systems where functionality and interactions are d ...
This chapter addresses the following issues: What makes a cross-device system feel coherent (see page 4) Why it’s complicate ...
encouraged us to start with mobile web or apps as a way to focus on optimizing key functionality and minimize ‘featuritis’. Such ...
What is interusability? Charles Denis and Laurent Karsenty first coined the term ‘inter-usability’ in 2004 to describe UX across ...
Conceptual models and composition In this section, we’ll look at two related concepts that help us design systems spanning multi ...
refers to as bridging ‘the gulf of execution’^4 )? How easy is it for the user to understand what the system does in response (‘ ...
You can’t design the user’s mental model directly. But you can design the system image to convey the design model clearly (see f ...
Take the example of a lighting system. The mental model of a lamp is simple: it has power, a switch, a fitting and a bulb (see f ...
Figure 9.7: connected lighting can do more than conventional lighting, but the conceptual model is more complex. (Lightbulb by M ...
Figure 9.8: Home automation routines stored in the cloud will not run if the internet connection goes down. If they are stored l ...
Figure 9.9: the BERG Cloud Bridge.(Image: BERG). The more complex the system, the more overwhelming it may be to explain in deta ...
Figure 9.10: automatic gearbox controls hide the complexity of the system behind a simplified conceptual model One example of a ...
Apple’s own description of iBeacons is "a new class of low-powered, low-cost transmitters that can notify nearby iOS devices of ...
User understanding will improve over time with familiarity, but only if we, as designers, help them with clear system images. We ...
Figure 9.12: Netflix is a multi-channel service However, many IoT services run on a mix of devices with different capabilities. ...
A boiler that heats the water An in -home controller/thermostat that tells the boiler when to switch on or off (this may be ...
Figure 9.15: The Tado heating controller and smartphone app The Hive Active Thermostat heating controller is a standard thermost ...
Figure 9.16: The Hive Active Thermostat heating controller and smartphone app (Images: British Gas). Some devices may not suppor ...
Figure 9.18: The Withings mobile app can use accelerometer data to measure activity. Even where different devices support the sa ...
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