Abstract: A device and method for transmitting selected confidential information from an institution to a plurality of parties using post cards that have a preprinted camouflage pattern printed in a first predetermined color, confidential information imprinted in a second predetermined color by the institution, printing the name and address of each second party on their respective card, sending the card through the mail to each second party and the second party viewing the information through a filter medium that freely transmits the first predetermined color and renders the information printed in the second color darker than the camouflage pattern. The card may be formed by printing the confidential information on a continuous form printer then detaching individual sections, folding in half and securing the halves together to fabricate a postcard sized and thickness form and then mailing the form to the respective second party at post card postage rates.

Abstract: A combination payment and receipt form and method of using the same has a first top thin sheet with printed indicia areas that are filled in by the user. Transfer means are provided to transfer this information in a first predetermined color to a second bottom sheet of a size and thickness suitable for use as a postcard. The second lower card sheet has a background camouflage area printed in another predetermined color located in the area where the information is transferred, with the transferred information normally not readily distinguishable against the background pattern. The upper and lower sheets are then mailed to a second party who indicates an acknowledgment on the card sheet and returns the same as a postcard to the user. The user then views the returned card through a filter medium that freely transmits the other predetermined color and renders the information transferred in the first color darker than the background pattern.