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Payal Gupta,
Sumit Kumar Gupta,
- Student, Department of Electronics and Communication Engineering, Bansal Institute of Engineering and Technology, Lucknow, U.P., India
- Assistant Professor, Department of Electronics and Communication Engineering, Bansal Institute of Engineering and Technology, Lucknow, U.P., India
Abstract
Technology is evolving at an unprecedented pace, becoming faster, more compact, lightweight, and efficient. Continuous advancements in electronics, communication systems, and embedded technologies have led to the development of innovative devices that enhance convenience and improve user interaction with digital systems. One such innovation is the laser projection keyboard, a virtual input device that eliminates the need for a traditional physical keyboard. By projecting a full-sized keyboard onto any flat surface, this technology provides a portable and flexible alternative for data entry while maintaining the functionality of a conventional keyboard. A laser projection keyboard operates by using laser projection and infrared sensing technology. The laser projects the image of a standard QWERTY keyboard onto a flat surface, while infrared sensors detect the position of a user’s finger when a virtual key is pressed. The detected keystrokes are processed by an embedded controller and transmitted to connected devices such as smartphones, tablets, laptops, or desktop computers through Bluetooth or USB communication. This enables accurate and efficient text input without requiring mechanical keys. The increasing demand for compact and portable computing devices has accelerated the adoption of virtual input technologies. Compared with conventional keyboards, laser keyboards occupy minimal space, are lightweight, and can be easily carried by users. Since they do not contain physical keys, they are also more hygienic, easier to clean, and less prone to mechanical wear and tears. These advantages make laser keyboards particularly suitable for business professionals, travelers, healthcare environments, educational institutions, and mobile computing applications. Although challenges such as typing accuracy under varying lighting conditions and the absence of tactile feedback remain, continuous improvements in sensing technology and embedded processing are enhancing their performance. Consequently, laser projection keyboards represent a significant advancement in human computer interaction, offering a modern, portable, and innovative solution for next-generation input technologies.
Keywords: Laser projection keyboard, Technological innovation, Keystroke, Portability, Space constraints, Hygiene
References
- Gupta RG, Reddy RS, Parmar NN. Virtual Keyboard Using Image Processing. International Research Journal of Engineering and Technology. 2016;3(4):2009-13.
- Jadhav K, Jagirdar F, Maine S, Shahabadi J. Virtual keyboard and virtual mouse. International Journal of Advanced Research in Computer Engineering & Technology (IJARCET). 2016 May;5(5):2278-1323..
- Zhai S, Hunter M, Smith BA. The metropolis keyboard-an exploration of quantitative techniques for virtual keyboard design. InProceedings of the 13th annual ACM symposium on User interface software and technology 2000 Nov 1 (pp. 119-128)..
- Du H, Oggier T, Lustenberger F, Charbon E. A virtual keyboard based on true-3D optical ranging. InProceedings of the British Machine Vision Conference 2005 (Vol. 1, pp. 220-229).
- Roy S, Singh AK, Mittal A, Thakral K. Virtual wireless keyboard system with co-ordinate mapping. International Journal of Advances in Engineering & Technology. 2014 Jul 1;7(3):1003..
- Usakli AB, Gurkan S. Design of a novel efficient human–computer interface: An electrooculagram based virtual keyboard. IEEE transactions on instrumentation and measurement. 2009 Oct 9;59(8):2099-108..
- Sabni T, Yavatkare JK, Yadav DS, Kakde V. Laser projection virtual keyboard: a laser and image processing based human-computer interaction device. Laser. 2017 Mar;6(3).
- Su X, Zhang Y, Zhao Q, Gao L. Virtual keyboard: A human-computer interaction device based on laser and image processing. In2015 IEEE International Conference on Cyber Technology in Automation, Control, and Intelligent Systems (CYBER) 2015 Jun 8 (pp. 321- 325). IEEE.
- Varcholik PD, LaViola Jr JJ, Hughes CE. Establishing a baseline for text entry for a multi- touch virtual keyboard. International Journal of Human-Computer Studies. 2012 Oct 1;70(10):657-72.
- Bhaumik T, Bhaumik S, Paul S, Mitra S. A comparative study between different types of multilevel inverter. International Research Journal of Engineering and Technology (IRJET). 2022 Jun;9(06).
Journal of Electronic Design Technology
| Volume | 17 | |
| 02 | ||
| Received | 20/07/2026 | |
| Accepted | 22/07/2026 | |
| Published | 27/07/2026 | |
| Publication Time | 7 Days |