An EIT-based piezoresistive sensing skin with a lattice structure

•A lattice-patterned tactile sensing skin is introduced for large-area pressure mapping applications.•The lattice structure is made of a piezoresistive silicone composite and is embedded into a silicone substrate.•Electrical impedance tomography (EIT) enables spatial mapping of pressure sans any internal wiring.•The entire surface of the sensing skin offers high sensitivity and spatial resolution in both flat and non-planar configurations.•The lattice pattern can be tailored to suit different applications in health monitoring and robotics.