Could a judge compel someone to give over access to the canary system, so that law enforcement would be the one falsely updating the canary? IAdefinitelyNAL, I'

Could a judge compel someone to give over access to the canary system, so that law enforcement would be the one falsely updating the canary? IAdefinitelyNAL, I've seen mentioned here and there that the police are allowed to lie while carrying out their investigations and duties.