Captive Portal solution


We are looking for a (preferably free tier) captive portal solution that can issue new codes on every connection, on a specific access point.
the solution can be either local or cloud-based.
We are a unifi and pfsense shop, but we do not want to use internal infrastructure for this matter.

Any help would be greatly appreciated.

best regards


I have used the Captive portal system in pfsense, but not really worked with or tested any outside solutions.

Thanks Tom. I guess I can work with vouchers with pfsense, but looking also for a cloud based solution, if any.

Best regards