Machine Readable Travel Documents - ICAO

III-4 Machine Readable Travel Documents
• EF.COM, containing version information and tag list;
• EF.SOD, containing data integrity and authenticity information.
7.4 All other Data Elements defined for recording by an issuing State or organization are OPTIONAL.
7.5 Groupings of Data Elements added by receiving States or approved receiving organizations may
or may not be present in an LDS. More than one recording of grouped Data Elements added by receiving
States or approved receiving organizations can be present in the LDS.
Note.— The ability for a receiving State or approved receiving organization to add data to the LDS
is not supported in this edition of Doc 9303, Part 3.
7.6 The LDS is considered to be a single cohesive entity containing the number of groupings of Data
Elements recorded in the optional capacity expansion technology at the time of machine reading.
Note.—The LDS has been designed with sufficient flexibility that it can be applied to all types of
MRTD. Within the figures and tables which follow, some data items are only applicable to machine readable
visas and to machine readable passports or require a different presentation in relation to these documents.
These items should be ignored in relation to the eMRtds.
7.7 Within the LDS, logical groupings of related Data Elements have been established. These logical
groupings are referred to as Data Groups.
7.8 Each Data Group is assigned a reference number. Figure III-2 identifies the reference number
assigned to each Data Group, for example, “DG2” identifies Data Group # 2, Encoded Identification Feature(s)
for the face of the rightful holder of the MRtd (i.e. facial biometric details).
8. DATA GROUPS CODED TO ALLOW CONFIRMATION OF
AUTHENTICITY AND INTEGRITY OF DATA
To allow confirmation of the authenticity and integrity of recorded details, an authenticity/integrity object is
included. Each Data Group MUST be represented in this authenticity/integrity object, which is recorded within
a separate elementary file (EF.SOD). (Refer to Section IV, PKI, for details.) Using the CBEFF structure utilized
for Encoded Identification Feature Data Groups 2-4 and optional “additional biometric security” features
defined in Section IV, PKI, identity confirmation details (e.g. biometric templates) MAY also be individually
protected at the discretion of the issuing State or organization.