BOHR International Journal of Internet of things, Artificial Intelligence and Machine Learning

Accounting for people is the first step of every manpower-based organization in today’s world. Hence, it takes up a significant amount of energy and value in the form of money from respective organizations for both implementing a suitable system for manpower management as well as maintaining that same system. Although this amount of expenditure for big organizations is near to nothing, rather just a formality, it does not hold as much truth for small organizations such as schools, colleges, and even universities to a certain degree. This is the first point. The second point for discussion is that much work has been done to solve this issue. Various technologies like biometrics, radio-frequency identification, Bluetooth, global positioning system, quick response code, etc., have been used to tackle the issues of attendance collection. This study paves the path for researchers by reviewing practical methods and technologies used for existing attendance systems