Wow, I was just playing around with the new version of nak by @fiatjaf , with it you can create your bunker in seconds to sign remotely on any client that supports nip-46. Just download the utility from the https://github.com/fiatjaf/nak repository, there you will find instructions on how to run it, once installed use the command `nak bunker --prompt-sec wss://<relay-url.com>` to start the bunker with the relay of your choice as coordinator, then once it has run it will ask you to set your nsec, after that you are all set to sign messages remotely using your own bunker!
I have recorded a short demo
https://media.nostr.build/av/1f14384e94665125e13524471899962d456c69114dc4f09d3c97dae0daf37300.webm  

 I see you prefer the terminal on the left and the browser on the right. Are you left-handed? 

 Very good observation skills, yes, I am mostly left-handed, why is this interesting? XD 

 Maybe left-handed people prefer the terminal on the left. 

 it makes more sense to have the input on the left and ouput on the right ¯\_(ツ)_/¯ 

 This is great! going to try it also. @fiatjaf I see the connection string is a bit different than I remember when integrating Pablo’s version, does it work the same or is this a different spec?  

 Same spec, just change the prefix from nsecbunker to just bunker 

 It's the same. We must agree on a connection string. I think people like the "bunker://" notation, so we must convince @PABLOF7z to implement it.

But we should also implement the NIP-05 custodial flow he is working on. I am not sure what are the necessary changes, but should be minimal.