Slides are up! tldr: Payjoins / Coinjoins on hardware wallets is no bueno. * Quick intro to payjoin and coinjoin cooperative spend transactions * All the things current hwws / signing devices get wrong when displaying these txs to users (yes, SeedSigner blows it, too) * Work-in-progress R&D on some better approaches.

Presented and discussed last night at #chibitdevs github.com/kdmukai/cooperative_spend_uiux_slides