PURPOSE: To provide a transparent coordinate input device capable of preventing stealing observation by a third person without making operator's recognition difficult even in the case of displaying an item requiring its secrecy.

CONSTITUTION: Since plural slits having angles capable of interrupting third person's stealing observation from a position other than an operator's visual point position A are arranged in a transparent film 7 formed on a liquid crystal panel 9 in the transparent type coordinate input device, third person's stealing observation can be prevented without making operator's recognition difficult and the secrecy of data can be improved.