Hello there,
I am from Ahmedabad, Gujarat. I am having working experience with GPS tracking solutions. I have developed one recently and can use all the concepts for your task too.
I have designed, developed, assembled and checked the device successfully.
I have kept the project in my portfolio. Please visit my profile to check it out.
Also, if required, I can send you once prototype of it too with minimal development charges.
Feel free to contact me anytime.
Regards,
Kartik Sheladiya