327
US prosecutors charge Atlanta man after GrapheneOS phone wipes itself during airport search
(www.theguardian.com)
This is a most excellent place for technology news and articles.
That is more or less what the old TrueCrypt (and also VeraCrypt) systems did. One password gets you the real data, the other opens a different partition that could be stuffed with dummy data.
True privacy/security night involve a hybrid, where it opens the device to the fake partition+profile but also kills off internal keys to the real data when the duress is used