Identity  misuse exists when a person uses the identity of another existing  person (name and date of birth) by using a document certifying identity  and/or status issued to another person. In those cases the Member State  that has entered the alert in SIS II adds additional data concerning the  person, subject to an identity misuse. The SIRENE Bureau process the  data with the express consent of the individual mentioned above. The  data is used as follows:
1.  to allow the competent authorities to distinguish the person whose  identity has been misused, from  the person who is intended as the  subject to the alert and has used stolen identity;
2.  to allow the person whose identity has been misused to prove his/her  identity and establish that his/her identity has been misused.
The  data include: surname and fore name, name at birth, previously used  names and aliases, which could be entered separately; distinguishable  face features; date and place of birth; sex; photographs; fingerprints;  nationality/es; serial number of the ID document/s and date of issue.
The  aforementioned data, which has been added to a SIS II alert, could be  erased either together with the alert, or earlier, provided the person,  subject to the identity misuse requests that. The additional data  processed by the SIRENE Bureau should be erased after the respective  alert has been erased, or when the subject to the identity misuse  requests that.
In  any case when the end-user of SIS II has doubts in the identity of the  person (especially when there is a confirmed match regarding the alias  or there is an alert for a person, subject to identity misuse), his/her  identity is checked, using an identification material. An expert  performs an authenticity check on an ID document, when needed. The  end-users should contact the SIRENE Bureau when additional information  is needed with regard to the data, concerning the person, subject to  identity misuse or when a sample for identification is necessary for  confirming the identity of the person under question. Additional  information can be requested when there is a difference between the data  entered in SIS II and the data on the ID document (serial number, date  of issue). When the identity of the person under question cannot be  confirmed, he/she could be detained for 24 hours.
 
                             
                        