US Patent 11756456 Clipboard for digitalizing information

A clipboard is realised as a base for a sheet of paper and with a fastening therefor, with the base provided with at least one RFID transponder. It comprises a marking on the base, which indicates, where exactly the paper is to be placed, as well as at least one sheet of paper with a RFID transponder, wherein a RFID transponder each of the base and of the paper are arranged so as to be close to each other for communication, when the sheet of paper is fixed to the fastening. The base includes a plurality of switches, which are preferably arranged in a matrix, whereas the sheet is provided with various information, instructions and/or choice variants as well as with a number of marking fields, which are respectively arranged at the locations of the switches of the clipboard, when the sheet is fastened on the marking of the base.