Information and physical evidence are two different things. The government can use your password if they can find it written down somewhere, they just can't com

Information and physical evidence are two different things. The government can use your password if they can find it written down somewhere, they just can't compel you to offer it up. But in cases where the government has metadata, logs, or other verifiable info about what is on the account, media, etc., recent precedent has established that they can hold you without charges for any amount of time, in the cases of some individuals, several years, in order to attempt to compel you to give up your password.