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Here, two hydrogel\u2010based alternatives are presented and benchmarked using a wireless commercial platform: a porous poly(3,4\u2010ethylenedioxythiophene):polystyrene sulfonate scaffold infused with hydrogel (PPSCF), and an all\u2010hydrogel, crosslinker\u2010free electrode (PPHG) synthesizes via a scalable, one\u2010pot process. PPHG demonstrates intrinsic stretchability, self\u2010adhesion, and biocompatibility, forming stable, low\u2010impedance contacts with skin. Electrochemical measurements reveal that PPHG maintains a capacitive interface with reduced resistive losses, low loss tangent, high dielectric constant, and fast relaxation dynamics, features that enable intrinsic signal smoothing and noise suppression. In a cohort of 39 participants, PPHG electrodes outperform Ag\/AgCl in electrocardiography (ECG), showing reduced motion artifacts, higher signal\u2010to\u2010noise ratios, and clear preservation of P\u2010, R\u2010, and T\u2010waves. Electroencephalography (EEG) recordings demonstrate enhanced alpha\u2013delta separation, while electrooculography (EOG)\u00a0and electromyography (EMG) signals exhibit greater amplitude and sharper features. Machine learning analysis of ECG signals reveals a 2.2\u2010fold improvement in inter\u2010lead classification accuracy. 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