It has to be convenient and (user) error proof. NFC can do that, like... any other 1st world country has in its ID card.
Why not decline such invitations? People plan based on your shared calendar, so of course they "book" others when they have openings. That does not mean that actually can make it.
What do you mean, cast by hand? Forged by hand? Large casting still happens pretty much like 2000 years ago.
Asklemmy @lemmy.ml Eheran @lemmy.world 2y ago Terry Pratchett: Why does Dodger scratch "Kaspar" in the carriage?
No productivity increase? What? For waiters maybe.