Switzerland is meeting the data protection requirements of Schengen

The decision taken by the EU during the Justice and Home Affairs council meeting on 5 and 6 June 2008 constitutes a decisive step forward for cooperation between Switzerland and the EU. The latter has confirmed that Switzerland fulfils the data protection requirements of the Schengen Association Agreement.

https://www.edoeb.admin.ch/content/edoeb/en/home/data-protection/police--defence-and-migration/the-schengen-agreement-and-the-dublin-regulation/switzerland-is-meeting-the-data-protection-requirements-of-schen.html