I want to find a WiFi solution where I can sell my internet service with anyone who needs to use it... ideally paying in an altcoin or Bitcoin.
Are there any router modifications, or infrastructures that support a wallet service? (e.g. the user pays at the captive portal) and then has time or bandwith limited access to the internet?
I found this list of router firmware that may support such modding, but not sure which one is best (and most secure) for the job.
Lacking that, perhaps I can leverage RADIUS authentication.