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Smartphones have emerged as a likely application area for graphical passwords, because they are easier to input on touchscreens than text passwords. Extensive research on graphical passwords and the capabilities of modern smartphones result in a complex design space for graphical password schemes on smartphones. We analyze and describe this design space in(More)
Graphical password schemes can provide better usability than text passwords, especially on smartphones where typing complex passwords on a virtual keyboard can be tedious. However, in order to achieve password strength comparable to text passwords, graphical password schemes require multiple rounds and, therefore, have longer entry times. We propose MIBA as(More)
Self-driving vehicles are able to drive on their own as long as the requirements of their autonomous systems are met. If the system reaches the boundary of its capabilities, the system has to de-escalate (e.g. emergency braking) or hand over control to the human driver. Accordingly, the design of a functional handover assistant requires that it enable(More)
Home automation promises more convenience for residential living. We propose process-driven home automation as an approach to reduce the difficulty of specifying automation tasks without restricting users in terms of customizability and complexity of supported scenarios. Our graph-based user interface abstracts from the complexity of process specification,(More)
Home automation aims to increase convenience of residential living. The homeBLOX system uses a process-driven execution model to enable complex automation tasks with heterogeneous devices, while providing a user interface that abstracts from lower-level complexity. Complex automation tasks are created as sequences consisting of events and actions linked to(More)
Although there are already fully autonomous vehicles on the roads for testing purposes, a rollout is far away. Autonomous vehicles are still not able to handle everyday driving and remain reliant on the driver when they reach their system limitations. One suggested approach to this problem is handing over the control entirely to the driver, which might(More)
Human errors are a major reason for traffic accidents. One of the aims of the introduction of automated driving functions in vehicles is to prevent such accidents as such systems are supposed to be more reliable, react faster with higher precision. Therefore, we assume that an increase of automation features will also increase safety. However, when drivers(More)