how to make long distance RFID Reader anteena 125 khz

We want total solution of hardware for school attendance system please provide me details about hardware and pricing. I am attaching some hardware sample image that we want first one image (Photo-0410.jpg) is AVR & GSM,GPRS Sim modules that we have second one is (Photo-0413.jpg) is long range antina amplifier that we recurred. Please look Video for more understanding.

Website- http://childsafetysystem.in/products/
Video URL- https://www.youtube.com/watch?v=eutJ7rYCOIk

Attachment of- Hardware Image

Although the post looks a bit like a spammed advertisement, I believe that you are searching for help with the development of your product. Unfortunately the attachments with technical details aren't present in your post.

We want total solution of hardware for school attendance system please provide me details about hardware. I am attaching some hardware sample image that we want first one image (Photo-0410.jpg) is AVR & GSM,GPRS Sim modules that we have second one is (Photo-04

13.jpg) is long range antina amplifier that we recurred. Please look Video for more understanding.

The thread is asking about 125 kHz long range reader "antenna" (inductive coupler), but you still don't tell what's your specific problem related to it. Did you already ask for "125 kHz long range reader" at google.

Either ask a clear question, or the thread will be deleted.