# Augmented Reality's Impact in Industry--A Scoping Review
## 1 Introduction  
Over the past decade, the world has experienced significant changes in problem-solving approaches due to emerging technologies [1]. The adoption of technologies such as Artificial Intelligence (AI), cloud storage, the Internet of Things (IoT), and Augmented Reality (AR) has enhanced the resolution of a range of day-to-day problems. These technologies have also influenced changes within industrial sectors. Industry 4.0, a term coined by the German Federal Government at the Hannover Fair in 2011, refers to the current era where manufacturing and information technology converge to improve factory processes [2]. Over the years, roadmaps have guided the implementation of emerging technologies in industry, though many still require further evaluation to ensure their real-world applicability [3]. This industrial revolution is a response to recent technological advancements and the necessity to incorporate them into systems to enhance efficiency and interconnectivity [3]. Additionally, it has enabled process automation and optimization, leading to cost reductions and increased profits [4]. Furthermore, it has fostered the innovation of new business models based on data, services, and collaboration [5]. Building upon this foundation, Industry 5.0 extends the principles of its predecessor by placing a stronger emphasis on human-centric values and sustainability. Introduced by the European Commission in 2021, Industry 5.0 shifts the focus beyond automation and efficiency to highlight the collaboration between humans and advanced technologies. Its goals include personalization, environmental sustainability, and improved worker wellbeing. This paradigm shift reframes industrial processes as ecosystems where technological advancements coexist with ethical and environmental considerations [6]. An approach that is gaining significance is the integration of AR within Industry 4.0 and Industry 5.0, as it can significantly enhance productivity and efficiency in various ways while addressing industrial challenges [7; 8]. This technology influences a wide range of industrial sectors, proving to be a versatile tool that not only improves productivity and efficiency but also enhances safety and work quality [8; 9]. Specifically, AR overlays digital objects onto the physical environment, allowing users to interact with a digitally enhanced real-world setting. AR has been applied across diverse fields such as entertainment, education, surgery, and mental health [10; 11; 12; 13]. Over the years, there has been a noticeable upward trend in the use of this technology [14]. Since 2020, there has been an exponential increase in the publication of articles related to this technology. The COVID-19 pandemic significantly accelerated the adoption of unexplored solutions. AR, together with other technologies, has seen an increase in usage due to the pandemic [15]. In the context of AR applications, both paradigms converge in their emphasis on enhancing human capabilities through technology. AR serves as a functional interface, enabling users to interact with digital environments while improving task execution and decision-making processes [16]. However, while AR in Industry 4.0 primarily aims to optimize productivity and reduce errors, its role in Industry 5.0 expands to include personalization and sustainability [17]. This dual applicability positions AR as a bridging technology that facilitates the transition between these paradigms without losing its core focus on empowering human users [18]. Existing research attempts to establish some standards but often focuses narrowly on specific devices, such as smartphones [19], or particular industry sectors, such as education [20]. The rising trend in AI as an emerging technology demands its consideration in this study. Like AR, AI is a highly versatile tool that has successfully served numerous industrial sectors [21; 22; 23]. Due to this, it has also become necessary to examine the relationship between these two emerging technologies through the analyzed studies.