Ruling: Thumbprint scan is like a "blood draw or fingerprint taken at booking."
The legal situation is more complex and nuanced than the headline implies, so the article is worth reading. This adds another ruling to the confusing case history regarding forced biometric unlocking.
This isn't new. I've been on the passcode to unlock train for a long time because of this. It's only news in that it's been codified by the court. You can't be compelled to reveal info.
On iPhone: press and hold the lock button and either volume button for 1-2sec. It'll force a passcode despite biometrics.
That's not completely true. In most states if they are knocking down your door with a search warrant and you flush a kilo of heroin down the toilet, you're getting an evidence tampering charge that will hold up in court.
There's a whole lot of caselaw surrounding this, and they will get someone to destroy the pipes to find out when they were flushed (their word goes, good luck finding someone impartial to say that wasn't what happened). I wish court cases were built on 1's and 0's like computer code but that's just not the way the world works.
Even if this is true, and I'm not arguing that it isn't, if you've committed a different crime with a worse punishment, you'll have to take that into consideration.