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Add fiscalDeviceIdentifier to the POS Device API #4682

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Add fiscalDeviceIdentifier to the POS Device API #4682

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77a810a
Add fiscalDeviceIdentifier to the POS Device API
shopifyzach Sep 10, 2026
6f76990
Describe fiscalDeviceIdentifier factually
shopifyzach Sep 10, 2026
5d97f23
Simplify fiscal device identifier comment
shopifyzach Sep 16, 2026
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5 changes: 5 additions & 0 deletions .changeset/pos-device-fiscal-device-identifier.md
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@@ -0,0 +1,5 @@
---
'@shopify/ui-extensions': minor
---

Add `fiscalDeviceIdentifier` to the POS Device API. `shopify.device.fiscalDeviceIdentifier` is the Shopify-assigned fiscal register identifier for the device (such as Sweden's manufacturing number), matching the `fiscalDeviceIdentifier` field on the `PointOfSaleDevice` object in the GraphQL Admin API. It's `undefined` when the device's location doesn't require fiscal device registration.
4 changes: 4 additions & 0 deletions packages/ui-extensions/src/surfaces/point-of-sale/api/device-api/device-api.ts
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Expand Up @@ -11,6 +11,10 @@ export interface DeviceApiContent {
* A short, unique identifier for the device, assigned by Shopify.
*/
registerName: string;
/**
* The Shopify-assigned fiscal register identifier for the device, such as Sweden's manufacturing number (tillverkningsnummer). It's the same value as the `fiscalDeviceIdentifier` field on `PointOfSaleDevice`.
*/
fiscalDeviceIdentifier?: string;
/**
* Retrieves the unique string identifier for the device. Returns a promise that resolves to the device ID. Use for device-specific data storage, analytics tracking, or implementing device-based permissions and configurations.
* Note: While Shopify POS attempts to maintain a stable identifier, it is not guaranteed to be permanent and may change.
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