Microfluidic paper-based analytical devices (μPADs) are an important class of microfluidic devices capable of performing total (bio)chemical analysis at ultralow cost . The strength of μPADs lies in their ability to move fluids via passive capillary action without the need for external fluid actuation, thus enabling complex bioassays with extraordinary simplicity . The integration of electronic components into μPADs has attracted substantial attention for its potential to realize new functionalities and capabilities. Indeed, the incorporation of electrodes opens the door to quantitative electrochemical detection , assay miniaturization (4) and advanced connectivity (e.g., via near-field wireless communications) . However, electrode fabrication on paper is immensely challenging due to the rough and inhomogeneous nature of cellulose materials. In addition, the cost and complexity of current fabrication techniques hinder single-use applications.