Since theres a lot of questions about how easyhotspot works, i wrote a blog post about how hotspot billing system works.
I try to explain it as simple as possible without forgetting the essence. I hope you find it useful, don’t forget to leave a comments 
link :
http://easyhotspot.inov.asia/blog/2010/07/how-a-hotspot-billing-system-works-simple-explanation/
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