Ability to echo asterisks/dots when typing in decryption passphrase?

[RileyMathews]

I know this is a minor nit but would it be possible to add support for being able to echo dots when typing in a luks decryption passphrase? My computer's keyboard can take a few seconds to fully connect on boot and before switching to booster it was helpful to be able to see the dots show up to know I had actually begun typing. I know the little _ flickers when typing keys but that is a lot less noticeable in general. I tried scanning through the docs and I don't see anything about being able to do that currently.