---
title: pos.cash-tracking-session-start.event.observe
description: |-
  Observes when cash tracking sessions begin, triggering when merchants start cash handling operations. Use this target for monitoring cash handling activities for compliance, security, or operational reporting purposes.

  Extensions at this target receive session data including the session ID and opening time when a new cash tracking session is initiated.
api_version: 2025-10
api_name: pos-ui-extensions
source_url:
  html: https://shopify.dev/docs/api/pos-ui-extensions/latest/targets/cash-tracking/pos-cash-tracking-session-start-event-observe
  md: https://shopify.dev/docs/api/pos-ui-extensions/latest/targets/cash-tracking/pos-cash-tracking-session-start-event-observe.md
---

pos.​cash-tracking-session-start.​event.​observe

Not supported in this version.