Prob one of the pre-packaged apps I would guess? i.e. Primal / Amethyst / etc.? Fairly certain they just download the app, create an account and can receive Zaps nearly instantly. No fiddling with sel...
I use Primal but didn't realise they had a wallet built in? It's been a while since I set everything up and I used AlbyHub. Does that also give them a lightning address too?
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