Sensors to detect attendance of students in class.

This was very interesting project which I had thought of making in my college days years ago. There is no sensor to detect particular person as likely to work as biometrics . I thought to do tweaks with some PIR motion sensor but it cannot count.

Then someone suggested me to use the person's cellphone as their identity and the simple ceiling detector is able to detect a particular code/message from cell no. and it accounts to the student attendance but again this is somewhat not practically feasible. there are many loopholes and constraints to this.

Next possible thing came to my mind was to implement a system which could monitor the audience through their respective sitting places. particular seats will be allotted to the students and the system just has to monitor the vacant/occupied and will mark respective student's name. if the seat will remain vacant, absent will be marked in front of student's name. I am trying a lot to implement the prototype even but not much successful.

You just think of reality shows going on where I have to take audience poll, they have respective meters in their hand and system is able to get voting poll, can we make some tweaks to this system and  convert it into meaning full attendance system.... Can we do something out of box??

This was very interesting project which I had thought of making in my college days years ago. There is no sensor to detect particular person as likely to work as biometrics . I thought to do tweaks with some PIR motion sensor but it cannot count.

Then someone suggested me to use the person's cellphone as their identity and the simple ceiling detector is able to detect a particular code/message from cell no. and it accounts to the student attendance but again this is somewhat not practically feasible. there are many loopholes and constraints to this.

Next possible thing came to my mind was to implement a system which could monitor the audience through their respective sitting places. particular seats will be allotted to the students and the system just has to monitor the vacant/occupied and will mark respective student's name. if the seat will remain vacant, absent will be marked in front of student's name. I am trying a lot to implement the prototype even but not much successful.

You just think of reality shows going on where I have to take audience poll, they have respective meters in their hand and system is able to get voting poll, can we make some tweaks to this system and  convert it into meaning full attendance system.... Can we do something out of box??