REFERENCES

1. Zeng, L.; Shen, P.; Zhu, X.; Tian, X.; Chen, C. A review of privacy-preserving biometric identification and authentication protocols. Comput. Secur. 2025, 150, 104309.

2. Alrawili, R.; Alqahtani, A. A. S.; Khan, M. K. Comprehensive survey: Biometric user authentication application, evaluation, and discussion. Comput. Electr. Eng. 2024, 119, 109485.

3. Nonnekes, J.; Goselink, R. J. M.; Růžička, E.; Fasano, A.; Nutt, J. G.; Bloem, B. R. Neurological disorders of gait, balance and posture: a sign-based approach. Nat. Rev. Neurol. 2018, 14, 183-9.

4. Li, J.; Zhang, S.; Zhong, J.; et al. Laser-induced graphene-assisted patterning and transfer of silver nanowires for ultra-conformal breathable epidermal electrodes in long-term electrophysiological monitoring. Adv. Funct. Mater. 2025, 35, 2504481.

5. Dong, X.; Fan, F.; Chen, L.; et al. Mechanical interlocking enhanced hybrid electrode for long-term epidermal biopotential monitoring in clinical applications. Chem. Eng. J. 2026, 527, 171609.

6. Xiao, M.; Luo, Y.; Chen, H.; et al. Conformal bioadhesive hydrogel-based multimodal wristband for accurate, mobile, and real-time sign language translation and human-machine interactions. Adv. Funct. Mater. 2025, 36, e22153.

7. Álvarez-aparicio, C. Guerrero-higueras, Á. M.; González-santamarta, M. Á.; Campazas-vega, A.; Matellán, V.; Fernández-llamas, C. Biometric recognition through gait analysis. Sci. Rep. 2022, 12, 14530.

8. Wang, Q.; Guan, H.; Wang, C.; et al. A wireless, self-powered smart insole for gait monitoring and recognition via nonlinear synergistic pressure sensing. Sci. Adv. 2025, 11, eadu1598.

9. Sun, R.; Wu, P.; Li, P.; et al. Bio-inspired triboelectric nanogenerator as a self-powered gait recognition sensor for legged robots. Sci. China. Mater. 2025, 68, 1542-51.

10. Jani, A. B.; Bagree, R.; Roy, A. K. Design of a low-power, low-cost ECG & EMG sensor for wearable biometric and medical application. In 2017 IEEE SENSORS, Glasgow, UK, October 29-November 1, 2017; IEEE, 2017; pp 1-3.

11. Huang, X.; Zheng, H.; Zhou, Z.; Sheng, Y. Gait recognition based on a-mode ultrasound and inertial sensor fusion systems. In Intelligent Robotics and Applications, ICIRA 2024, Xi'an, China, July 31-August 2, 2024; Lan, X., Mei, X., Jiang, C., Zhao, F., Tian, Z., Eds.; Springer: Singapore, 2025; pp 192-205.

12. Chen, Y.; Liu, Z.; Wang, Z.; et al. Bioinspired robust gas-permeable on-skin electronics: armor-designed nanoporous flash graphene assembly enhancing mechanical resilience. Adv. Sci. 2024, 11, 2402759.

13. Shi, X.; Song, D.; Hu, W.; et al. A sweat absorbing skin electrode for electrophysiology during exercise. Adv. Funct. Mater. 2024, 34, 2314775.

14. Liu, Y.; Chen, S.; Shi, L.; et al. Water-enhanced adhesive interface for high-quality physiological signal monitoring in skin-device integration. Adv. Funct. Mater. 2025, 36, e16396.

15. He, Y.; Cheng, Y.; Yang, C.; Guo, C. F. Creep-free polyelectrolyte elastomer for drift-free iontronic sensing. Nat. Mater. 2024, 23, 1107-14.

16. He, J.; Huang, J.; Li, R.; et al. Hysteresis-free and dynamically resilient strain sensor enabled by interfacial coordination. Sci. Adv. 2026, 12, eaea2450.

17. Yang, J. C.; Mun, J.; Kwon, S. Y.; Park, S.; Bao, Z.; Park, S. Electronic skin: recent progress and future prospects for skin-attachable devices for health monitoring, robotics, and prosthetics. Adv. Mater. 2019, 31, 1904765.

18. Ohm, Y.; Pan, C.; Ford, M. J.; Huang, X.; Liao, J.; Majidi, C. An electrically conductive silver-polyacrylamide-alginate hydrogel composite for soft electronics. Nat. Electron. 2021, 4, 185-92.

19. Sun, T.; Feng, B.; Huo, J.; et al. Artificial intelligence meets flexible sensors: emerging smart flexible sensing systems driven by machine learning and artificial synapses. Nano-Micro. Lett. 2023, 16, 14.

20. Song, Y.; Liu, Y.; Qi, T.; Li, G. L. Towards dynamic but supertough healable polymers through biomimetic hierarchical hydrogen-bonding interactions. Angew. Chem. Int. Ed. 2018, 57, 13838-42.

21. Jeon, I.; Cui, J.; Illeperuma, W. R. K.; Aizenberg, J.; Vlassak, J. J. Extremely stretchable and fast self-healing hydrogels. Adv. Mater. 2016, 28, 4678-83.

22. Liu, K.; Cheng, L.; Zhang, N.; et al. Biomimetic impact protective supramolecular polymeric materials enabled by quadruple H-bonding. J. Am. Chem. Soc. 2020, 143, 1162-70.

23. Jin, Y.; Wang, R.; Tang, D.; et al. AI-enabled adaptive eutectogel skin for effective motion monitoring with low signal artifacts. Adv. Funct. Mater. 2025, 35, 2424965.

24. Jiang, W. J.; Zhong, F. Y.; Zhou, L. S.; Peng, H. L.; Fan, J. P.; Huang, K. Chemical dual-site capture of NH₃ by unprecedentedly low-viscosity deep eutectic solvents. Chem. Commun. 2020, 56, 2399-402.

25. Guo, X.; Zhang, S.; Patel, S.; et al. A skin-mimicking multifunctional hydrogel via hierarchical, reversible noncovalent interactions. Sci. Adv. 2025, 11, eadv8523.

26. Xiang, H.; Li, X.; Wu, B.; Sun, S.; Wu, P. Highly damping and self-healable ionic elastomer from dynamic phase separation of sticky fluorinated polymers. Adv. Mater. 2023, 35, 2209581.

27. Yu, T.; Zhang, L.; Dou, X.; et al. Mechanically robust hydrogels facilitating bone regeneration through epigenetic modulation. Adv. Sci. 2022, 9, 2203734.

28. Zhu, R.; Zhu, D.; Zheng, Z.; Wang, X. Tough double network hydrogels with rapid self-reinforcement and low hysteresis based on highly entangled networks. Nat. Commun. 2024, 15, 1344.

29. Li, W.; Wang, X.; Liu, Z.; et al. Nanoconfined polymerization limits crack propagation in hysteresis-free gels. Nat. Mater. 2023, 23, 131-8.

30. Yang, K.; Li, Q.; Tian, S.; et al. Highly stretchable, self-healing, and sensitive e-skins at -78 °C for polar exploration. J. Am. Chem. Soc. 2024, 146, 10699-707.

31. Sun, H.; Lee, H. H.; Blakey, I.; et al. Multiple hydrogen-bonded complexes based on 2-ureido-4[1H]-pyrimidinone: a theoretical study. J. Phys. Chem. B. 2011, 115, 11053-62.

32. Fengler, C.; Keller, J.; Ratzsch, K. F.; Wilhelm, M. In situ RheoNMR correlation of polymer segmental mobility with mechanical properties during hydrogel synthesis. Adv. Sci. 2021, 9, 2104231.

33. Dong, J.; Liu, H.; Lim, T.; et al. Viscoelastic adhesive, super-conformable, and semi-flowable liquid metal eutectogels for high-fidelity electrophysiological monitoring. ACS. Appl. Mater. Interfaces. 2024, 16, 34732-42.

34. Liu, P.; Pei, D.; Wu, Y.; Li, M.; Zhao, X.; Li, C. Dynamic and mechanically robust and ultrafast healable ionogel for nerve fiber-inspired signal transmitter. J. Mater. Chem. A. 2022, 10, 25602-10.

35. Noda, I. Generalized two-dimensional correlation method applicable to infrared, Raman, and other types of spectroscopy. Appl. Spectrosc. 1993, 47, 1329-36.

36. Yang, J.; Chang, L.; Deng, H.; Cao, Z. Zwitterionic eutectogels with high ionic conductivity for environmentally tolerant and self-healing triboelectric nanogenerators. ACS. Nano. 2024, 18, 18980-91.

37. Lata, K.; Saini, S. Hardware software co-simulation of an AES-128 based data encryption in image processing systems for the internet of things environment. In 2020 IEEE International Symposium on Smart Electronic Systems (iSES) (Formerly iNiS), Chennai, India, December 14-16, 2020; IEEE, 2020; pp 260-4.