https://apps.shopify.com/locksmith/?ref=heliumdev.com
Locksmith - Flexible access control for the Online Store channel | Shopify App Store
Access control for the Online Store channel. Lock any content; grant access with passcodes and more.
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https://collaborate.princeton.edu/en/publications/a-general-and-flexible-access-control-system-for-the-web-2/
A general and flexible access-control system for the web - Princeton University
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https://www.avigilon.com/access-control/credentials
Access Control Credentials for Secure and Flexible Entry
May 13, 2026 - Get access control credentials for your business. See Avigilon's range of physical and digital access credentials for secure, convenient entry.
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https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20170410/035795.html
[swift-evolution] Yet Another Access Control Pitch: Flexible Scoping
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