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Figure 1. Concept and mechanism of the flexible FMG handwriting recognition system. (A) Schematic of the mechanism response of the medial wrist flexor group and a 3 × 3 flexible array during the writing process; (B) Exploded view and key performance indicators of the flexible pressure sensor array based on MWCNTs/mPDMS; (C) Signal acquisition and neural network decoding process, converting multichannel time waveforms into gesture and handwriting classifications. FMG: Flexible force myography; MWCNTs: multiwalled carbon nanotubes; mPDMS: microstructured polydimethylsiloxane; PI: polyimide; DL: detection limit.