“…Several researchers have conducted investigations into contact systems [ 22 , 25 , 41 , 42 , 43 , 44 , 45 , 46 , 47 ]. However, current research seems to indicate that contact systems are more sought-after for monitoring hand functionality [ 1 , 5 , 9 , 29 , 48 , 49 ]. Several types of sensors have been used to measure the quantitative measurements of interest, with complex architectural and circuit designs.…”