Embodiments of the present invention provide an approach that leverages public key infrastructure (PKI) digital signature and barcode technology in providing a passport that can be validated for authenticity and data integrity when in printed form. In one embodiment, there is a barcoding tool that includes a data retrieving component configured to retrieve a set of identity data; a data concatenating component configured to concatenate the set of identity data into a single data string; a digital signature generating component configured to generate a digital signature from the data string using a private key of an issuing authority; and a barcode generating component configured to generate a barcode symbol from the data string and a barcode symbol from the digital signature. In another embodiment, there is a barcode reading tool that includes reading the identity data and digital signature barcode symbols using a barcode reader; displaying the identity data and digital signature on a display device; verifying the digital signature; and displaying verification results on a display device.