Synonyms and related words :
ID card, John Hancock, X, alphabetic character, autograph, badge, calligram, calling card, card, character, christcross, cipher, countermark, countersign, countersignature, counterstamp, credentials, cross, device, dog tag, endorsement, graph, grapheme, hand, identification, identification badge, identification tag, initials, letter, letter of introduction, lexigraphic character, mark, mark of signature, phonetic character, phonetic symbol, pictographic character, press card, seal, serial number, sigil, sign, sign manual, signature, signet, subscription, syllabic, symbol, tessera, visa, vise, visiting card, writing, written character