Nostr client developers really need to make it easier to add friends via QR codes — especially when meeting users in person, not just following them online. Many clients are quite inconvenient in this aspect, and some don't even have this feature at all. It's unreasonable to expect users to manually type long public keys, and given that Nostr is decentralized, search functions are already limited. It’s frustrating that even when you meet someone in real life, adding them as a contact can be such a hassle.