Web service
Article 13
1. In order to enable third-country nationals to verify at any moment the remaining authorised stay, a secure internet access to a web service hosted by eu-LISA in its technical sites shall allow third-country nationals to provide the data required pursuant to point (b) of Article 16(1) together with their intended date of entry or exit, or both. On that basis, the web service shall provide third-country nationals with an OK/NOT OK answer, as well as the information on the remaining authorised stay. 2. By way of derogation from paragraph 1, for an intended stay in a Member State which does not yet apply the Schengen acquis in full but operates the EES, the web service shall not provide any information on the authorised stay based on a short-stay visa or a national short-stay visa. In the case referred to in the first subparagraph, the web service shall enable third-country nationals to verify the compliance with the overall limit of 90 days in any 180-day period and to receive information on the remaining authorised stay under that limit. This information shall be provided for stays in the 180-day period preceding the consultation of the web service or their intended date of entry or exit, or both. 3. In order to fulfil their obligation under point (b) of Article 26(1) of the Convention implementing the Schengen Agreement, carriers shall use the web service to verify whether third-country nationals holding a short-stay visa issued for one or two entries have already used the number of entries authorised by their visa. Carriers shall provide the data listed under points (a), (b) and (c) of Article 16(1) of this Regulation. On that basis, the web service shall provide carriers with an OK/NOT OK answer. Carriers may store the information sent and the answer received in accordance with the applicable law. Carriers shall establish an authentication scheme to ensure that only authorised staff may access the web service. It shall not be possible to regard the OK/NOT OK answer as a decision to authorise or refuse entry in accordance with Regulation (EU) 2016/399. 4. For the purpose of implementing Article 26(2) of the Convention implementing the Schengen Agreement or for the purpose of resolving any potential dispute arising from Article 26 of the Convention implementing the Schengen Agreement, eu-LISA shall keep logs of all data processing operations carried out within the web service by carriers. Those logs shall show the date and time of each operation, the data used for interrogation, the data transmitted by the web service and the name of the carrier in question. Logs shall be stored for a period of two years. Logs shall be protected by appropriate measures against unauthorised access. 5. The web service shall make use of a separate read-only database updated on a daily basis via a one-way extraction of the minimum necessary subset of EES and VIS data. eu-LISA shall be responsible for the security of the web service, for the security of the personal data it contains and for the process of extracting the personal data into the separate read-only database. 6. The web service shall not enable carriers to verify whether third-country nationals holding a national short-stay visa issued for one or two entries have already used the number of entries authorised by that visa. 7. The Commission shall adopt implementing acts concerning the detailed rules on the conditions for the operation of the web service and the data protection and security rules applicable to the web service. Those implementing acts shall be adopted in accordance with the examination procedure referred to in Article 68(2).