The problem that occurred was CV. Scootres Group had not had a marketing application so it was difficult to serve the buyers who wanted to buy a Vespa when they were far from the location. Sometimes the seller has to answer the questions one by one from the buyers. This study aims at creating an Android-Based Vespa Motorcycle Marketing application to facilitate marketing on the CV. Scoots Group. The data was obtained through Field Research, Library Research, and interview. Then the system design stage, application creation, and testing stage. The SDK used is EasyAR and the C programming language and the method used in this research is the Markerless method. The results of the study indicate that the system used is BlackBox testing and User Acceptance Test (UAT) based on BlackBox testing, the system is running well, and based on UAT testing 10 respondents with a percentage of 85% and 2 Expert Examiners with a percentage of 89%, both are included in the category strongly agree to apply.

The purpose of this study was to investigate the theme of the abstract, the theme of the Title on Virtual Reality in the Sciences and Biomedical Sciences and to investigate the trends of authors and countries who are major contributors to research on virtual reality in the sciences and biomedical sciences, the researchers used metadata from 497 journals. scientifically indexed with topic modeling algorithms. The results of the study found that for virtual reality themes listed in the abstracts of science and biomedical fields, the words that often appear were study and systems related to pediatric surgery, stroke and cancer. Then the research theme in the virtual reality title regarding science and biomedicine is to get words that often appear, namely evaluation and videos that contain about the fields of dental health, stroke and cancer, Furthermore, from a technological point of view, it relates to head-mounted devices to display 2 or 3 dimensions, and educational psychometric technology relates to learning to care for children for students. While the sports side is related to the movement of the body's physical activity in adults. Analysis of research trends for authors and countries that are major contributors to virtual reality research on science and biomedical based on wordcloud analysis with names that often appear in virtual reality is Wiederhold BK and the dominant country is United State.