What is a Keyboard Wedge? Complete Guide

A keyboard wedge is a hardware device that distributes information between a computer and point of sale terminal. It plugs into a USB port or COM port, and allows input to be received by a computer’s keyboard. It works transparently between the keyboard and point of sale terminal, and doesn’t interfere with the operation of the keyboard. Software versions of this device can also accept input from serial ports and LAN connections.

A keyboard wedge connects to a measurement instrument, a digital caliper, or a legacy device to provide data. The data is typed into an application by the user’s keyboard. A keyboard wedge’s price ranges from $25 to $180, depending on its size and interface. A recent survey of prices shows that the median cost of a keyboard is $350. This price was updated on June 1, 2019.

A keyboard wedge connects to a serial port or USB. The software allows it to interface with a PC application. The computer will think the data was entered using the keyboard. In contrast, a hardware keyboard wedge reads data from digital gages and sends it to a PC via a USB or a keyboard. The data looks like keyboard data to the current application. This includes Microsoft Excel, Microsoft Access, and other database type applications.

Understanding Keyboard Wedges

A keyboard wedge is a fundamental component of modern technology that plays a crucial role in data input and integration processes. By grasping the concept of keyboard wedges, you can gain a deeper understanding of their significance and functionality in various applications and industries.

At its core, a keyboard wedge serves as a bridge between input devices, such as barcode scanners or magnetic stripe readers, and computer systems. It enables the seamless transfer of data captured by these input devices directly into the active application, as if the data were manually typed on the keyboard. This eliminates the need for specialized software or complex integration procedures, making data input more efficient and user-friendly.

How Keyboard Wedges Function

When a keyboard wedge is connected between an input device and a computer system, it intercepts the data transmitted by the input device and emulates keyboard keystrokes. It accomplishes this by converting the data from the input device into keyboard-compatible signals that can be understood by the computer. As a result, the computer interprets the data as if it were manually entered through the keyboard.

Types of Devices that Use Keyboard Wedges

Keyboard wedges find applications in a wide range of devices and industries. They are commonly employed in retail environments for barcode scanning, where the barcode scanner is connected via a keyboard wedge to the point-of-sale (POS) system. Additionally, keyboard wedges are utilized in healthcare settings, inventory management systems, logistics and supply chain operations, and various industrial environments where quick and accurate data entry is essential.

Advantages of Using Keyboard Wedges

Keyboard wedges offer several advantages that contribute to their widespread adoption:

Simplicity: Keyboard wedges simplify the integration process by emulating keyboard input, eliminating the need for complex software integration or custom drivers.

Compatibility: They are compatible with a wide range of devices, operating systems, and applications, making them versatile and adaptable to different environments.

Cost-effective: Keyboard wedges are cost-effective solutions since they utilize existing infrastructure without requiring extensive modifications or additional hardware.

Real-time data transfer: With keyboard wedges, data is transferred instantly and accurately in real-time, minimizing delays and potential errors associated with manual data entry.

User-friendly: They offer a user-friendly experience, as data input is seamless and requires minimal training or technical expertise.

By understanding these advantages, businesses and individuals can harness the power of keyboard wedges to optimize their data input processes, streamline operations, and enhance overall productivity.

Keyboard Wedges in Practice

Keyboard wedges find practical applications across diverse industries, revolutionizing data input processes and enhancing efficiency in numerous scenarios. Let’s explore some key examples and use cases that highlight the versatility and benefits of keyboard wedges.

Applications of Keyboard Wedges in Different Industries

Retail: In the retail sector, keyboard wedges play a pivotal role in point-of-sale (POS) systems. Barcode scanners connected via a keyboard wedge allow for seamless scanning and quick data entry at checkout counters, significantly improving transaction speed and accuracy.

Healthcare: Keyboard wedges are widely used in healthcare settings to streamline patient information management. Medical practitioners can scan patient IDs, medical records, or medication barcodes using barcode scanners connected via a keyboard wedge, ensuring accurate and efficient data entry without interrupting workflow.

Logistics and Warehousing: In logistics and warehousing operations, keyboard wedges enable rapid data capture for inventory management. Barcode scanners integrated with keyboard wedges expedite the scanning and tracking of goods, enhancing inventory accuracy and optimizing supply chain processes.

Manufacturing and Industrial Environments: Keyboard wedges are employed in manufacturing and industrial sectors to facilitate data input and control processes. From capturing product information to monitoring production line data, keyboard wedges ensure seamless integration of devices such as barcode scanners or data collectors with production systems, enhancing productivity and minimizing errors.

Examples of Devices that Utilize Keyboard Wedges

Barcode Scanners: Barcode scanners, ranging from handheld devices to fixed-mounted scanners, are commonly connected via a keyboard wedge to various systems. This allows for effortless scanning of barcodes, empowering businesses to manage inventory, track assets, and expedite transactions.

Magnetic Stripe Readers: Keyboard wedges also play a significant role in magnetic stripe reader applications. These readers, frequently used in access control systems or point-of-sale terminals, capture data from magnetic stripe cards (e.g., credit cards or ID cards) and seamlessly transmit it to the connected computer system.

Data Collectors and Mobile Devices: Keyboard wedges facilitate integration with data collectors and mobile devices, enabling efficient data collection and transmission. Whether it’s inventory audits, asset tracking, or data gathering in the field, the use of keyboard wedges ensures accurate and immediate input of data into the designated systems.

Common Use Cases and Scenarios

Inventory Management: Keyboard wedges streamline inventory management processes by enabling swift barcode scanning for stock replenishment, stocktaking, and item tracking. This ensures accurate inventory records and minimizes manual data entry errors.

Patient Care: In healthcare facilities, keyboard wedges enhance patient care by expediting data capture and retrieval. From patient identification to medication administration, the use of barcode scanners connected via keyboard wedges optimizes workflows, reduces errors, and improves patient safety.

Time and Attendance Tracking: Keyboard wedges integrated with time clocks or ID card readers enable efficient time and attendance tracking. By swiftly capturing employee data, businesses can automate attendance records and simplify payroll processes.

Event Ticketing: In event management, keyboard wedges enable rapid scanning of barcode or QR code tickets, ensuring seamless entry and minimizing queues. The integration of keyboard wedges with ticketing systems enhances the overall event experience for attendees.

Choosing the Right Keyboard Wedge

Selecting the appropriate keyboard wedge is crucial to ensure seamless integration and optimal performance in your specific setup. Consider the following factors when choosing a keyboard wedge that meets your requirements:

Factors to Consider

Compatibility: Determine the compatibility of the keyboard wedge with your existing systems, operating systems, and applications. Ensure that the keyboard wedge supports the interfaces and protocols required for smooth integration.

Device Connectivity: Evaluate the types of devices you plan to connect via the keyboard wedge. Consider whether it supports the connection of barcode scanners, magnetic stripe readers, data collectors, or other input devices you intend to use.

System Interface: Assess the interface options of the keyboard wedge, such as USB, PS/2, or serial ports, and choose the one that aligns with your computer system’s available ports and capabilities.

Software Support: Check if the keyboard wedge comes with appropriate software tools or configuration utilities that simplify setup, customization, and troubleshooting processes.

Ensure that the keyboard wedge is compatible with various systems and devices you intend to use. This includes compatibility with different operating systems (e.g., Windows, macOS, Linux) and compatibility with the specific applications you rely on for data input and processing.

Features and Functionalities to Look For

Data Formatting: Look for a keyboard wedge that offers flexible data formatting options, allowing you to manipulate and format the data captured by the input devices to match the requirements of your applications or databases.

Keyboard Mapping: Consider a keyboard wedge that supports customizable keyboard mapping, enabling you to define specific keystrokes or commands that will be generated by the input device. This ensures seamless integration with your applications and systems.

Error Handling and Validation: Evaluate whether the keyboard wedge provides error handling and data validation features, which can help detect and correct errors or inconsistencies in the captured data before it reaches the application.

Configuration Flexibility: Opt for a keyboard wedge that offers a range of configuration options, allowing you to fine-tune settings according to your specific requirements. This includes adjusting parameters such as transmission speed, data delimiters, or special character handling.

Evaluating Reliability and Ease of Use

Robustness: Choose a keyboard wedge that is built with durability and reliability in mind. Consider the device’s construction quality and the reputation of the manufacturer in terms of product reliability and customer support.

Ease of Installation: Look for a keyboard wedge that offers straightforward installation processes, providing clear instructions and user-friendly interfaces. This reduces the time and effort required for initial setup.

User-Friendly Interface: Consider a keyboard wedge with an intuitive user interface that simplifies configuration and management tasks. This ensures that users can easily adapt to the system and perform necessary adjustments as needed.

Technical Support: Ensure that the manufacturer or supplier of the keyboard wedge provides reliable technical support, including documentation, FAQs, and access to knowledgeable support representatives, should you encounter any issues or require assistance.

Installation and Setup

Setting up a keyboard wedge requires a systematic approach to ensure proper integration and smooth functionality. Follow these steps to install and configure a keyboard wedge for your specific requirements:

Steps to Install a Keyboard Wedge

  1. Connect the Hardware: Begin by connecting the keyboard wedge to your computer system. Depending on the interface of the keyboard wedge (e.g., USB, PS/2, serial), use the appropriate cables and connectors to establish a secure and stable connection.
  2. Install Required Drivers (if applicable): In some cases, the keyboard wedge may require specific drivers to be installed on your computer system. Follow the manufacturer’s instructions to install the necessary drivers, ensuring compatibility and proper communication between the keyboard wedge and your system.
  3. Power On and Test Connectivity: Power on the keyboard wedge and ensure that it is receiving power. Test the connectivity by scanning or swiping a sample barcode or card using the connected input device. Verify that the data is being transmitted and received by the computer system.

Configuring the Keyboard Wedge for Specific Requirements

  1. Access Configuration Utilities: Many keyboard wedges come with configuration utilities or software tools that allow you to customize settings. Launch the appropriate configuration utility provided by the manufacturer.
  2. Define Keyboard Mapping: In the configuration utility, define the keyboard mapping settings that align with your applications and systems. This involves assigning specific keystrokes or commands to the data transmitted by the input device through the keyboard wedge.
  3. Adjust Data Formatting: If required, modify the data formatting options within the configuration utility. This includes settings such as data delimiters, character replacements, or data manipulation rules to ensure the captured data is correctly formatted for your applications or databases.
  4. Error Handling and Validation: Configure error handling and data validation settings, if available. This enables the keyboard wedge to detect and rectify errors or inconsistencies in the captured data before transmitting it to the application, ensuring data accuracy and integrity.
  5. Fine-Tune Additional Settings: Explore other configuration options provided by the keyboard wedge, such as transmission speed, input device settings, or special character handling. Adjust these settings according to your specific requirements and preferences.
  6. Save and Apply Configuration: Once you have made the necessary adjustments, save the configuration settings within the utility and apply them to the keyboard wedge. Ensure that the configuration changes are successfully saved and implemented.

Troubleshooting Common Installation Issues

  1. Check Connections: If the keyboard wedge is not functioning correctly, verify the connections between the keyboard wedge, input device, and computer system. Ensure that all cables are securely connected and that there are no loose connections or faulty cables.
  2. Update Drivers: If the keyboard wedge requires drivers, ensure that you have installed the latest drivers compatible with your operating system. Check the manufacturer’s website for any driver updates or patches that may address compatibility issues.
  3. Restart System: Sometimes, a simple system restart can resolve minor issues related to the keyboard wedge. Restart your computer system after installing the keyboard wedge and drivers to ensure a fresh start.
  4. Seek Technical Support: If you encounter persistent issues or require further assistance, contact the manufacturer’s technical support team. They can provide guidance, troubleshoot specific problems, and offer solutions tailored to your situation.

Security Considerations

While keyboard wedges offer convenience and efficiency in data input, it is essential to address security considerations to protect sensitive information. By implementing best practices and understanding potential risks, you can mitigate security vulnerabilities associated with keyboard wedges.

Potential Security Risks Associated with Keyboard Wedges

Data Interception: Keyboard wedges transmit data directly into the active application, which means that any malicious software or keyloggers present on the system could intercept and capture the transmitted data. This can result in unauthorized access to sensitive information.

Data Integrity: As keyboard wedges emulate keystrokes, there is a potential risk of data tampering or manipulation during the data transfer process. An attacker could alter the data captured by the input device before it reaches the application, compromising data integrity.

Physical Security: Keyboard wedges rely on physical connections between input devices and the computer system. Inadequate physical security measures could lead to unauthorized access or tampering with the connections, potentially compromising data security.

Best Practices for Securing Keyboard Wedges

Use Trusted Devices and Sources: Only use reputable input devices and keyboard wedges from trusted manufacturers or suppliers. Ensure that the devices and wedges are from reliable sources to reduce the risk of compromised hardware or software.

Implement Anti-malware Protection: Deploy robust anti-malware and antivirus solutions on your computer systems to detect and mitigate any malicious software that may attempt to intercept or manipulate data transmitted through the keyboard wedge.

Regularly Update Software and Drivers: Keep your keyboard wedge software, drivers, and operating system up to date with the latest security patches and updates. Regularly check the manufacturer’s website for any available updates or security fixes.

Secure Physical Connections: Safeguard the physical connections between the input devices, keyboard wedge, and computer system. Utilize cable locks or secure the devices and connections in a controlled and monitored environment to prevent unauthorized access or tampering.

Monitor System Activity: Implement robust monitoring and logging systems to track and detect any suspicious activities or anomalies related to the keyboard wedge. Regularly review logs and investigate any potential security incidents.

Encrypt Sensitive Data: Consider encrypting sensitive data at the application or database level. This adds an extra layer of protection, ensuring that even if the data is intercepted, it remains encrypted and unusable to unauthorized individuals.

User Training and Awareness: Educate users about the potential security risks associated with keyboard wedges and train them to identify and report any suspicious behavior or anomalies. Promote good security practices, such as strong passwords and regular system updates.

Protecting Sensitive Data when using Keyboard Wedges

Use Secure Connections: Whenever possible, utilize secure connections, such as encrypted communication protocols (e.g., HTTPS) for data transmission between the keyboard wedge and the application. This helps safeguard the data during transit.

Limit Access and Permissions: Restrict access to systems and applications that receive data from the keyboard wedge. Implement user access controls, permissions, and authentication mechanisms to ensure that only authorized personnel can access sensitive data.

Regularly Audit and Review: Conduct periodic security audits and assessments to identify vulnerabilities and areas for improvement. Review access logs, configuration settings, and security measures to maintain a robust security posture.

Alternatives to Keyboard Wedges

While keyboard wedges are widely used and effective in many scenarios, alternative technologies offer different approaches to data input and may be better suited for specific applications. Let’s explore some of these alternatives and their pros and cons:

Virtual Serial Port Emulation

Virtual serial port emulation software allows you to emulate a physical serial port on your computer system. This enables direct communication between the input device and the application, bypassing the need for a keyboard wedge. It offers more flexibility and control over data transmission, but may require additional software configuration and compatibility considerations.


  • Provides direct communication between the input device and application.
  • Offers more control over data transmission and customization options.
  • Can support a wide range of input devices, including barcode scanners, card readers, and more.


  • Requires additional software installation and configuration.
  • Compatibility with specific devices and operating systems may vary.
  • May involve a steeper learning curve and technical expertise to set up and maintain.

USB Human Interface Device (HID) Integration

USB Human Interface Device (HID) integration allows input devices to connect directly as HID devices, bypassing the need for a keyboard wedge. This enables seamless communication with the application, as the input device is recognized as a standard HID device. It simplifies integration and offers broader compatibility, but may have limited customization options.


  • Streamlines integration without the need for a keyboard wedge.
  • Provides broader compatibility with applications and operating systems.
  • Offers plug-and-play functionality, reducing setup complexity.


  • Customization options may be limited compared to keyboard wedges.
  • Compatibility with certain specialized input devices may vary.
  • May require additional configuration or driver installation in some cases.

Direct Application Integration

Direct application integration involves developing custom software or utilizing software development kits (SDKs) provided by device manufacturers. This approach allows direct communication between the input device and the application, bypassing the need for a keyboard wedge or additional software layers. It offers maximum flexibility and control, but requires development resources and expertise.


  • Enables direct communication between the input device and application.
  • Offers the highest level of customization and control over data input.
  • Can support specialized requirements and unique workflows.


  • Requires software development expertise or the use of SDKs.
  • Development and maintenance costs may be involved.
  • May have limited compatibility with certain devices or operating systems.

It’s important to carefully evaluate your specific requirements, system compatibility, and the level of customization needed when considering alternatives to keyboard wedges. Depending on your use case, one of these alternatives may better suit your needs.

Future Trends and Developments

As technology continues to advance, keyboard wedges are likely to undergo further developments and innovations. Let’s explore some future trends and developments that we can expect in the realm of keyboard wedges:

1. Integration with Wireless Technologies

Wireless connectivity is becoming increasingly prevalent in various industries. Future keyboard wedges are likely to incorporate wireless technologies such as Bluetooth or Wi-Fi, enabling seamless and flexible integration with input devices without the constraints of physical cables. This advancement will enhance mobility and expand the range of applications where keyboard wedges can be utilized.

2. Enhanced Security Features

With the growing emphasis on data security, future keyboard wedges are expected to integrate enhanced security features. These may include advanced encryption algorithms, secure transmission protocols, and built-in authentication mechanisms to protect sensitive data during transmission. The aim will be to minimize vulnerabilities and ensure secure data input processes.

3. Advanced Data Formatting and Processing Capabilities

Future keyboard wedges may offer more sophisticated data formatting and processing capabilities. These may include intelligent data parsing, manipulation, and validation functionalities, allowing for more complex data transformations based on specific business rules or requirements. This will enable organizations to streamline data input processes and improve data quality.

4. Integration with IoT and Edge Computing

As the Internet of Things (IoT) and edge computing gain momentum, keyboard wedges may evolve to seamlessly integrate with these technologies. This integration would allow input devices connected to IoT-enabled systems or edge computing devices to transmit data directly through keyboard wedges, further enhancing real-time data processing and decision-making capabilities.

5. Improved Cross-Platform Compatibility

Future keyboard wedges are expected to offer improved cross-platform compatibility, supporting a broader range of operating systems and applications. This will allow for seamless integration across different platforms, including desktops, mobile devices, and embedded systems, providing flexibility and interoperability.

6. Machine Learning and Artificial Intelligence Integration

The integration of machine learning and artificial intelligence technologies into keyboard wedges could bring significant advancements. These technologies can be leveraged to automate data recognition, error correction, and data mapping processes, reducing manual configuration and enhancing the accuracy and efficiency of data input.

7. Streamlined Configuration and Management

Future keyboard wedges are likely to feature user-friendly configuration interfaces and streamlined management tools. This will simplify the setup and maintenance processes, making it easier for users to customize settings, update firmware, and troubleshoot issues, ultimately improving user experience and reducing the learning curve.

As technology progresses, these trends and developments will shape the future of keyboard wedges, making them more versatile, secure, and user-friendly. Embracing these advancements will empower organizations to optimize data input processes and unlock new possibilities across industries.


Keyboard wedges are indispensable tools in modern technology, enabling seamless data input and integration between input devices and computer systems. Throughout this guide, we have explored the fundamentals of keyboard wedges, their practical applications across various industries, and factors to consider when choosing and setting up a keyboard wedge.

Understanding the functionality and benefits of keyboard wedges empowers businesses and individuals to streamline data entry processes, enhance efficiency, and improve accuracy. By leveraging keyboard wedges in retail, healthcare, logistics, manufacturing, and other industries, organizations can optimize operations, reduce errors, and enhance productivity.

While utilizing keyboard wedges, it is essential to address security considerations. Implementing best practices, such as using trusted devices, securing physical connections, and staying vigilant against potential risks, ensures the protection of sensitive data and mitigates security vulnerabilities.

As technology advances, we can anticipate future trends and developments in the realm of keyboard wedges. Wireless connectivity, enhanced security features, advanced data formatting capabilities, integration with IoT and edge computing, and improved cross-platform compatibility are among the anticipated advancements that will shape the future of keyboard wedges.

In conclusion, keyboard wedges continue to play a vital role in data input and integration processes. By staying informed about the latest trends and developments, organizations can harness the power of keyboard wedges to optimize workflows, enhance security, and embrace emerging technologies.

Whether it’s streamlining retail transactions, improving patient care in healthcare settings, optimizing inventory management, or simplifying data capture in industrial environments, keyboard wedges provide a reliable and efficient solution for seamless data input. Embrace the potential of keyboard wedges and unlock new possibilities for efficiency and productivity in your endeavors.

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