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. 2021 Jan 20;21(3):703. doi: 10.3390/s21030703

Figure 7.

Figure 7

Examples of NFC applications for sweat sensing. (a) Construction of an NFC sweat monitoring device [54]. (b) Photograph of the sweat monitoring device [54]. (c) Construction of a integrated NFC sweat sensor [55]. (d,e) Photograph of the device attached to the forearm during sweating [55]. (f) Results of reading distance between the device and reader antenna [55].