Attendance is checked in obligatory auditory exercises or lectures and in colloquia and examinations. The process itself almost always tends to one of two extremes: it is often too detailed and too long, e.g. when the professor goes around the whole lecture hall and ticks each one individually, or it is too imprecise, not reliable enough and too short, e.g. when students sign a piece of paper that is passed around the lecture hall. We implemented an attendance system, that contains the best features of both extremes. Students, when asked by the professor, walk by the device and show their student IDs. The system recognises the registration numbers with ORC techniques and sends them to the server, which stores them in a database. Professors have an access to a web application where they can book the device for a specific term. Once the verification is complete, they can access and, if necessary, export the records. This way of identification is faster and simpler, but still extremely reliable.
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