Introducing the ACR3901U-S1 ACS Secure Bluetooth® Contact Card Reader, a cutting-edge device that seamlessly blends advanced smart card reader technology with Bluetooth® connectivity. This compact and wireless smart card reader boasts a sleek design, catering to a diverse range of requirements in various smart card-based applications, effortlessly connecting to Bluetooth-enabled devices such as smartphones and tablets. Designed to accommodate ISO 7816 Class A, B, and C smart cards (5 V, 3 V, and 1.8 V), as well as a wide array of memory cards, including microprocessor cards with T=0 and T=1 protocols, the ACR3901U-S1 stands out with its versatility. Equipped with both USB Full Speed and Bluetooth 4.0 interfaces for smart cards, it achieves an impressive read/write speed of up to 600 Kbps. The ACR3901U-S1's portability is unmatched, thanks to its compact design and rechargeable Lithium-ion battery. This feature ensures convenience and flexibility, enabling users to carry and utilise the device anytime, anywhere. In addition to its exceptional features, the ACR3901U-S1 offers in-field firmware upgrades, enabling users to keep pace with rapidly evolving technology across various applications. This not only saves valuable time and costs but also ensures the utmost convenience for users. The ACR3901U-S1 utilises Bluetooth® technology, facilitating easy integration without the need for physical connections to terminals. Enhanced with an AES-128 encryption algorithm, it supports a broad range of devices, including those running on Android™ 4.3 and above, iOS 8.0 and above, Windows®, and Mac OS®. PC/SC and CCID compliance make the ACR3901U-S1 easy to install and use in any computer-based environment. The device's drivers are compatible with Windows®, Linux®, and Mac OS®, ensuring seamless integration across different operating systems. With its myriad features and state-of-the-art technology, the ACR3901U-S1 emerges as the perfect smart card reader for your comprehensive smart card solution, promising efficiency, security, and convenience.