Affordance++: Allowing Objects to Communicate Dynamic Use

@article{Lopes2015AffordanceAO,
  title={Affordance++: Allowing Objects to Communicate Dynamic Use},
  author={Pedro Lopes and Patrik Jonell and Patrick Baudisch},
  journal={Proceedings of the 33rd Annual ACM Conference on Human Factors in Computing Systems},
  year={2015}
}
We propose extending the affordance of objects by allowing them to communicate dynamic use, such as (1) motion (e.g., spray can shakes when touched), (2) multi-step processes (e.g., spray can sprays only after shaking), and (3) behaviors that change over time (e.g., empty spray can does not allow spraying anymore). Rather than enhancing objects directly, however, we implement this concept by enhancing the user. We call this affordance++. By stimulating the user's arms using electrical muscle… 
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