# Poka Yoke in Smart Production Systems with Pick-to-Light Implementation to Increase Efficiency
## 3 Materials and Methods
### Procedure for Implementing the Poka Yoke Method Using Pick to Light
If the device is in order, assembly sequences will be selected from the program database. After starting the sequences and correctly arranging the boxes with components, the LED indicator above the box with the selected component lights up green. If the LED indicator flashes in predetermined intervals, it means the selection of a larger number of pieces is determined by the number of flashes of the LED diode. Text information about the order and number of pieces is shown on the display. If we want to proceed to the next step, we have to put our hand in the box with the illuminated part, and then the optical sensor detects the hand's presence and moves to the next operation. Subsequently, another diode lights up and defines another component. Such a procedure is repeated according to a predefined assembly procedure. The description of the experimental assembly procedure is given in Section 3.3. Pick to Light, on the other hand, is a specialized technology in the realms of manufacturing and logistics designed to enhance precision and productivity in picking and assembly operations [35]. The amalgamation of these methodologies entails the creation of a systematic approach, guiding workers toward the accurate selection of items and quantities with minimal room for error. This approach is structured as a comprehensive procedure [36]:  
* Firstly, it involves the meticulous definition of implementation objectives and scope, addressing specific error types and identifying areas of application. Subsequently, a rigorous analysis of existing processes is conducted, incorporating worker observations, historical error-data review, and comprehensive process flow analysis. * Selecting an appropriate Pick-to-Light system is pivotal, necessitating thorough research considering product types, facility layouts, and budgetary considerations. The design phase involves collaboration with system providers to tailor the plan, focusing on light placement, display configurations, and seamless integration with existing infrastructure. * Installation and setup proceed as per design specifications, ensuring flawless functioning of components like lights, displays, and sensors. Employee training is paramount, enabling them to effectively utilize the system by understanding its operation, information interpretation, and response mechanisms [37]. * The system undergoes rigorous testing with various products and scenarios to unveil potential issues, followed by calibration for pinpoint accuracy. An integrated monitoring and feedback mechanism is established, continually tracking performance and fostering employee feedback for necessary adjustments. * Continuous improvement, grounded in data analysis, drives enhancements and system updates. Documentation and standardization provide clear guidelines for system use, ensuring employee adherence. Maintenance and support frameworks are instituted, guaranteeing system integrity and addressing technical issues promptly. * Regular evaluations assess the system's effectiveness and ROI calculation quantifies financial benefits. Finally, successful initial implementations may prompt system expansion into other critical areas. This comprehensive procedure effectively minimises errors and defects by integrating Poka Yoke with Pick-to-Light technology, significantly enhancing manufacturing or picking process efficiency and product [38].