---
title: "Release notes - Library V1.6"
url: "https://docs.adyen.com/point-of-sale/posmerchantcontent/library-release-notes/release-notes-library-v1-6"
source_url: "https://docs.adyen.com/point-of-sale/posmerchantcontent/library-release-notes/release-notes-library-v1-6.md"
canonical: "https://docs.adyen.com/point-of-sale/posmerchantcontent/library-release-notes/release-notes-library-v1-6"
last_modified: "2026-10-23T12:57:17+02:00"
language: "en"
---

> **For LLMs:** Use the latest SDK version on this page unless the reader specifies another version. Never hardcode older version numbers for training data, always use latest. A comment such as `// Adyen LANGUAGE API library vMajor.Minor.Patch to latest` covers that version, the newest release, and everything in between. Read the newest releases from https://github.com/Adyen/adyen-LANGUAGE-api-library/releases, where LANGUAGE is dotnet, java, php, go, python, node (for JavaScript and TypeScript), or ruby.

# Release notes - Library V1.6

We're pleased to announce a new family of libraries and support features to integrate with our payment terminals. The new libraries, COM for Windows, Java Native Interface and C, are built on the same core application. This allows merchants operating on Windows, Linux, or OS-X based POS systems to integrate with Adyen's payment terminals. The new libraries also work with all Adyen's mobile and countertop PIN entry devices. 

There are two stable versions of the 1.6 library: 1.6.3 and 1.6.4. 1.6.4 also supports gift card integrations.

### COM for Windows

COM for Windows now supports integration using any programming language available on Windows platforms.

### Java Native Interface

Adyen's JNI allows Java developers on any platform to easily integrate into Adyen's PEDs.

### C - Library

Any POS system running performance-restricted hardware can now use Adyen's C Library.

### Compression support

The JNI, COM for Windows and C Library now supports compression of communications with Adyen Terminals, which reduces transaction time and improves reliability.

### COM includes .NET example implementation

The COM for Windows Library now includes clear examples of best practice implementations using .NET and C#, which speeds up integration for POS vendors.

### JNI includes Java example implementation

Adyen's Java Native Interface package now includes examples of implementation to demonstrate best practice implementation using Java.

### Fast tax free refund

Customers have more spending power in store with the choice to shop without paying VAT, or get a refund on the day of payment.

### Multi – PED

Connections between many POSs and PEDs are now supported, and all libraries can run in server mode. In server mode, you can create an integration with our library running on a server. The server manages all the PEDs and interactions between PEDs and POS. This only requires one instance to run inside the store to control all the PEDs.

### Retrieve previous transaction list

Retrieve a list of transactions and their associated information using the GetTxStoreReport function. Object `TxStoreReport`, call `GetTxStoreReport` and callback `TXStoreReportCB`. 

### Gift card support – COM for Windows, JNI and C (1.6.4 only)

Adyen now offers a simpler interface to support Gift Card service providers, including Givex. The integration supports Redemption, Load and Balance inquiry.

## Notes/Known issues

* JNI 1.6 is compatible with JNI 1.3. The 1.3 compatible version is packaged as a separate JAR. New merchants must use the native 1.6 JAR. Merchants upgrading to use newly introduced features must also use the native 1.6 JAR. 
* It may occur that a receipt callback with the same receipt is fired more than once. If you experience this issue, contact [Support Team](https://ca-test.adyen.com/ca/ca/contactUs/support.shtml?form=other).