The unique number will be put on an identity card which will have biometric authentication, such as fingerprints and photographs.
VOA: standard.2009.09.24
According to Reforma's investigation, an identitycardnumber that Ricardo Miguel Cavallo submitted to the Mexican authorities in a residency application is the same one sighted by the Spanish judge, Baltasar Garzon, who wants to try Miguel Angel Cavallo on charges of torture and murder.
Officials are attempting to make these tasks more manageable by requiring that users of the most prominent microblog service, Sina Weibo, register using their real name and identity-card number by March 16th.