security system

[shahrukh]

recently i have an idea in my mind,and want to make some thing of it.

to design a system which works as,

i through same special ink write anything on page or first page of any book.

then when that page is passed through a censor type thing it will detect it and rings any alarm.

what the key is when any page which do not have that special ink when passed through system wonnt cause alarm to ring.


if let say i made such project and want to modify this project in a way that project keeps record of the time and date when alarm rings through interfacing.


but the problem is so far what i write is just a thinking and i don't know from where to start and most important how to start,how to write on paper,and from which ink i write etc.

so i think in this forum many of electronic genius are present and i hope any one of those might give me some useful way to start.

remeber i wish to use microcontroller for this.

i am waiting for reply.

tc
bye

[lucicop]

I don't think there is a way to detect an ink. The method currently used to secure books in a bookstore is to put a little energized coil on the last page, which is detected at the exit by means of RFID. Why would you like to use ink ?

[user112]

Hallo you can use magnetic ink detectors something like this http://www.semelab.com/pdf/misc/SDV1003B_web.pdf