Using internet only for a day
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 Dear Expertise , I want to distribute internet connection inside a LAN Based on a ticket ( like a topup card). This card should be valid only for a day . For the new day He or she should get a new card from my desk . Can you please let me know how is it possible and what is the software and system that can fulfill my requirement . Thank you so much for the hint 
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 Maybe something like what hotels use for daily guest access? 
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 Can you let me know the name of the system they are using ???? 
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 I've never implemented one but they are pretty common. Some APs might do it internally even. 
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 It's called a captive portal. There are some open source ones if your APs won't do it. 
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 @Farhad-Farahmand - There are options built in UniFi if you are using Ubiquiti gear. https://help.ubnt.com/hc/en-us/articles/205143830-UniFi-Hotspot-Portal-Customization Willie Howe does a ton of youtube videos on Ubiquiti. The one below is integrating Stripe but you can do a voucher style system instead. 
 Youtube Video
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 I had pretty good success with pfSense in the past. It features a built-in captive portal and guest vouchers. Stable, reliable and highly customizable. Plus there's no need for spezialized access points or wireless controllers. https://doc.pfsense.org/index.php/Captive_Portal 
 https://doc.pfsense.org/index.php/Captive_Portal_Vouchers
 https://doc.pfsense.org/index.php/Category:Captive_Portal


