---
title: "Discussion on \"Trusting the clock: how licensing survives date rollback\" | Hashnode"
description: "Discussion on \"Trusting the clock: how licensing survives date rollback\". Almost every time-limited license comes down to one comparison: is now past the expiry date? The trouble is the word now. On the user's device, \"now\" is whatever the system clock says, and the system"
url: "https://hashnode.com/posts/trusting-the-clock-how-licensing-survives-date-rollback/6af32819f910c8b38f074b9e"
---

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# [Trusting the clock: how licensing survives date rollback](https://delta1labs.hashnode.dev/trusting-the-clock-how-licensing-survives-date-rollback?utm_source=hashnode&utm_medium=feed)

Almost every time-limited license comes down to one comparison: is now past the expiry date? The trouble is the word now. On the user's device, "now" is whatever the system clock says, and the system

1d ago · 6 min read · delta1labs.hashnode.dev  
Updated 1h ago  
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-   [#licensing](https://hashnode.com/tag/licensing)
-   [#security](https://hashnode.com/tag/security)
-   [#guide](https://hashnode.com/tag/guide)

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