I’m basically trying to make an electronic attendance machine to count the number of students in a class and so that they can give their respective roll no’s and not give any one elses by mistake or intentionally.
I plan to go about making it based on the Intel 8051 chip. The problems I face are one or more students might try to give attendances for friends which is to be prevented. The count is to be calculated when the student enters the class room . The professor then enters his code for his specific tutorial. The students then enter thier unique code ( by way to keying in or by barcodes) and they registers thier attendance.
Problems
1 - How do I catch the culprits
2 - How do ensure that there has been proper count of the students entering the class ( I thought of using lasers but it doesnt seem to fit in ie ppl can walk past it a couple of times registering a false count or if someone leaves the class the count still gets registered (for which I figured out using two lasers and the count gets registered according to the laser that is deactiveted or activated first , but that is also not foolproof if you consider a person who is wildly swinging his arms and makes the device beleive someone is entering the class)
Any and all ideas are welcome.
Thanx
Jay
PS : If you have any questions regarding my queries let me know!