Spectre - What's Seed Signing?

The idea here is you have a multi-sig wallet, right? You have the coordinator software on a computer that is connected to the internet or in the case of Blue Wall of the Phone. And then you have these multiple signing devices, which historically we've called hardware wallets. But also the advantage of that system is if we can pull the micro SD that the operating system was loaded from out, then we could actually, if some people prefer to do moving the PSBTs back and forth with a micro SD card,. That would allow us to add that feature to which some people prefer.