Letters that make signature recognition
s, a, o, e, g, n, c, r, t, i, u are letters that make 'signature recognition'
Words within signature recognition
cog, nature, sign, signature, IT, re, ti, si, EC, at, SI, on, cognition, recognition, nit, gnat, Ur, CO, Io, ion, Re, At, Co, Ni, Si, Na, Ti, Ig are words within 'signature recognition'