fig12

Figure 12. SSIs enabled applications in authentication and interactions. (A) Authentication for security applications. Earable platform in the left part of (A): Adapted from Ref. [277], under CC BY 4.0 license. Authentication by ear canal deformation in the right part of (A): Adapted from Ref. [278], under CC BY 4.0 license. (B) Human-machine interactions. AR character control: Adapted with permission from Ref. [5] Copyright 2023, Wiley-VCH. Phone or Drone Control: Adapted with permission from Ref. [115] Copyright 2023, RSC. Human-Robot Collaborations: Adapted with permission from Ref. [64] Copyright 2025, Wiley-VCH. SSIs: Silent speech interfaces; AR: augmented reality.