Device development study demonstrates continuous multi-sensor tracking via a battery-free skin tag, suggesting scalable wearable physiological monitoring.
Battery-free skin-interfaced sensing requires lightweight passive tags that can operate with wearable readers. Here, we report a flexible NFC platform combining a passive circular FPCB tag with a flexible TRF7970A-based reader for temperature and impedance monitoring. The tag integrates an RF430FRL152H transponder, skin-contact impedance electrodes, an analog front end for impedance measurement, and an STS41 temperature sensor. The tag maintained stable data readout within 25 mm, and preserved its response under 1 cm bending. A status-gated, duty-cycled ISO 15693 workflow enabled 0.1 Hz temperature and impedance updates with BLE smartphone visualization.
No takes yet. Share an insight, caveat, or question.
Han et al. (2026) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: