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S 2133

An Act protecting the privacy of library user data

194th Legislature (2025-2026) Introduced by Jamie Eldridge

Massachusetts bill establishing legal privacy protections for library patron data and restricting disclosure to law enforcement and third parties without proper legal process.

Hearing scheduled for 06/24/2025 from 10:00 AM-01:00 PM in A-1
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Bill Summary · S 2133

Legislative bill overview

S 2133 would establish legal protections for library user data in Massachusetts, restricting how libraries can collect, use, and share patron information. The bill requires libraries to implement privacy safeguards and limits disclosure of patron records except in specific circumstances like law enforcement with proper legal process.

Why is this important

Libraries maintain detailed records of patron borrowing habits, research interests, and personal information. Without explicit legal protections, this sensitive data could be sold to third parties, accessed by government agencies without warrants, or used for purposes beyond library services—raising concerns about surveillance, discrimination, and freedom of inquiry.

Potential points of contention

  • Law enforcement access standards: Disagreement over whether libraries should require warrants for all government data requests or allow subpoenas, which have lower legal thresholds than warrants
  • Scope of "patron data": Debate over what information qualifies for protection (borrowing records, library card applications, online activity) and whether protections extend to library WiFi usage
  • Compliance costs: Concerns that smaller libraries lack resources to implement and maintain new privacy compliance systems and staff training requirements

Compiled from official sources — confirm details with the bill’s official record.

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