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. 2022 Mar 15;13:1345. doi: 10.1038/s41467-022-28725-7

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© The Author(s) 2022

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — a Extra hand for assembly tasks. b Polydactyly hand with six fingers providing superior manipulation abilities⁴. c Third arm to facilitate activities of daily living in hemiplegics. d Centaur robot for stability and walking assistance. e Surgery with three tools controlled by the hands and a neural interface. f Augmented interaction with a mobile device can free one hand to e.g. operate a map. Panel a by Tobias Pistohl; b modified from ref. ⁴. Panels c, e, and f by Nathanael Jarrassé. Panel d by Camille Blondin.