Statute Text
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1Every person has the right to privacy in their private and family life and in their home, and in relation to their mail and telecommunications.

2Every person has the right to be protected against the misuse of their personal data.

Art. 13 Protection of Privacy

Overview

Article 13 Const. protects the privacy of every person in four areas: private and family life, the home, and correspondence and telecommunications (para. 1). Additionally, paragraph 2 guarantees protection against the misuse of personal data.

This fundamental right emerged with the total revision of 1999 from the need for comprehensive protection in light of technological development (BBl 1997 I 1, 153 f.). Previously, the Constitution only recognised individual aspects such as the right to respect for the home. The explicit inclusion of data protection reflected the societal importance of protecting personal data in the information age.

Private life encompasses all areas of personal development - from identity through relationships to professional development (BGE 144 I 266 E. 5.1). The Federal Supreme Court determines the scope of protection on a case-by-case basis in accordance with ECtHR case law (Diggelmann, BSK BV, Art. 13 N. 13).

Family life protects relationships between family members, including de facto family relationships. The classification of same-sex partnerships is controversial: While the Federal Supreme Court traditionally assigns these only to private life, the ECtHR recognises them as family (Diggelmann, BSK BV, Art. 13 N. 20). Recent case law is approaching the ECtHR perspective (BGE 150 I 50 E. 5.3).

The home functionally encompasses all spaces of private life - from one's own dwelling through hotel rooms to business premises with private character.

Correspondence and telecommunications protects confidential communication regardless of the medium. This includes emails, SMS and messenger services as well as traditional letters (Diggelmann, BSK BV, Art. 13 N. 29-31).

Data protection (para. 2) guarantees the right to informational self-determination - understood as the «right to be let alone» according to Warren/Brandeis (Diggelmann, BSK BV, Art. 13 N. 16). The protection covers the collection, storage, use and disclosure of personal data by state authorities (BGE 128 II 259 E. 3.2).

Every interference with Art. 13 Const. requires justification according to Art. 36 Const.: legal basis, public interest, proportionality and preservation of the essential content. For particularly sensitive personal data, a formal legal basis is required.

Practical examples: House searches must be proportionate (BGE 141 IV 77 E. 4.2). In migration law, Art. 13 Const. establishes a conditional right to family reunification where private life is well-established (BGE 135 I 143 E. 2.1). Surveillance of telecommunications is only permitted for serious offences and with judicial approval (BGE 129 I 85 E. 3.3). The installation of radio water meters also constitutes an interference with informational self-determination and requires a legal basis (BGE 147 I 346 E. 5.3).

The protection is not absolute: In case of conflicts with other fundamental rights or public interests, a balancing of interests must be undertaken. The provision has close connections to Art. 8 ECHR, but partially goes beyond it through the explicit anchoring of data protection.