About the Authors

Jared Markowitz

Affiliation MIT Media Lab, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America

Hugh Herr

hherr@media.mit.edu

Affiliation MIT Media Lab, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HH JM. Performed the experiments: JM. Analyzed the data: JM. Contributed reagents/materials/analysis tools: JM HH. Wrote the paper: JM HH.