New to all this?

From #780938 you will find this: https://brrr.gandlaf.com/

which lets you print a CashU voucher (paying for it using LN is an option),

then from a mobile phone wanting to get pay for Hotspot access, .... without any CashU Wallet, simply scan the QR code from the voucher and paste that CashU token into the Tollgate sign-in page

If your phone camera app doesn't convert QR codes to data, you can use other apps, ... such as Binary Eye, for example on Android, to get the CashU toek from the QR code.