Fig. 3: Comparison of wirelessly recharged or powered wearables.
From: Towards a digitally connected body for holistic and continuous health insight
A Biosymbiotic device with a small battery and recharge at distance22, enabling 24/7 operation without user interaction, image credit Gutruf lab. B Photonically powered device via perovskite solar cells enabling operation during light hours without additional infrastructure, Reproduced with permission from ref. 24, copyright (Springer Nature BV, 2023) C Wireless power distribution via textile25 enabling operation utilizing the smartphone as a power source.
