Vol.15 No.1 – February 2022 67 ISSN : 1978-8282, Online ISSN: 2655-4275 Attendance System of Computer Laboratory Assistant in PT.XYZ Using Wireless Fidelity Rahmat Sulaiman *1 , Agustina Mardeka Raya 2 , Tri Sugihartono 3 , Fransiskus Panca Juniawan 4 , Ayu Ratna Juwita 5 1,3,4 Informatic Engineering, Faculty Of Information Technology, ISB Atma Luhur 2 Information System, Faculty Of Information Technology, ISB Atma Luhur 5 Informatic Engineering, Faculty Of Information Technology, Buana Perjuangan University E-mail: *1 rahmatsulaiman@atmaluhur.ac.id, 2 agustinamardekaraya@atmaluhur.ac.id, 3 trisugihartono@atmaluhur.ac.id, 4 fransiskus.pj@atmaluhur.ac.id, 5 ayurj@ubpkarawang.ac.id Abstract The use of Android smartphones is becoming increasingly widespread in all walks of life in people's daily lives. Supported by the development of mobile applications that are so innovative and varied, is one of the reasons. Mobile application development aims to support almost all human activities, especially in the world of work, therefore the programmer creates a presence system using Android-based wireless fidelity (WIFI) at laboratory of PT.XYZ. At the laboratory of PT.XYZ, they still use manual attendance system for presence of computer laboratory assistant, so there are several problem like productivity decreases due to fraud in attendance, namely the help of friends to be absent without having to be present, to data errors. Through wireless fidelity programmers solve problems with prototype research models and Object Oriented Programming (OOP) methods. The software development tool is the Unified Modeling Language (UML). The Applications has made using hash function of encryption on admin passwords and the user passwords. Both of the encryptions work on private passwords, even the admin and programmers don't know the contents of the user's password. The main result of this research is we can provide that there’s many way to make presence system one of them uses WIFI. Keywords — Attendance System, Wifi Attendance System, Wireless Fidelity Presence System, Presence System. 1. INTRODUCTION Lately the use of Android smartphones is becoming increasingly widespread in all over the world. Supported by the development of mobile applications that are so innovative and varied, is one of the reasons. Mobile application development aims to support almost all human activities, such as games, calculators, social media, and also specifically supports teaching and learning activities. PT.XYZ is one of the universities in Bangka Belitung that has a study in the field of informatics engineering. As one of the universities that has the study of informatics engineering, it must have a computer laboratory (labkom) with national standards, therefore to improve laboratory performance, it must have a good presence for laboratory assistant, especially laboratory assistants (Aslab). Manual attendance may seem more cost-effective because there is no need to use special technology to record employee attendance. However, indirectly, relying on human