Reading Messages on a Spouse's Old Phone Under Idaho Law

Attorney Answer

On the facts as described, reading messages already sitting on a phone your spouse left in your hands — no passcode, never asked for it back — is unlikely to be charged as a crime. But "unlikely" is not "safe," and going back later to read new messages arriving through the still-live account is the part that carries real risk.

Idaho's computer crime statute is Idaho Code § 18-2202. Subsection (3) provides that "any person who knowingly and without authorization uses, accesses, or attempts to access any computer, computer system, or computer network" commits computer crime, a misdemeanor. Subsections (1) and (2), covering fraudulent schemes and unauthorized alteration or destruction of data, are felonies. Everything in your scenario turns on the words "without authorization," and the statute does not define them. Continued physical possession of the device, known to your spouse, with no passcode and no revocation of access, cuts against a finding that the access was unauthorized. That is an application of the element, not a rule any Idaho court has announced in a spousal-device case — no such decision was located.

The federal Stored Communications Act, 18 U.S.C. § 2701, criminalizes intentionally accessing a facility through which an electronic communication service is provided without authorization, or exceeding authorized access, and thereby obtaining or altering an electronic communication in electronic storage. If access to the device was never revoked and the phone was simply left with you, coverage is doubtful. But here is the harder half: courts are split on whether messages already downloaded onto a local device are in "electronic storage" at all, versus messages pulled fresh from a server through a still-active account login. Your scenario — a phone still signed into your spouse's Apple ID, with new messages appearing — sits on the harder side of that line. It should not be described as clearly lawful.

And the criminal question may not be your real problem. In a divorce or custody case, the bigger consequences are usually whether the messages come into evidence at all and how a judge reacts to how they were obtained.

What you can do

1. Stop opening new messages on that device. What has already appeared is one thing; continuing to monitor a live account is where exposure grows. 2. Do not use passwords, reset codes, recovery emails, or any credential to keep the account signed in or to sign back in. That is the conduct "without authorization" is aimed at. 3. Write down now, while it is fresh, how you came to have the phone, that it had no lock, that your spouse knew you had it, and the dates you looked at it. That record is your defense to the authorization question. 4. Preserve what you already saw — screenshots, and the device itself, powered down and set aside. Do not delete anything, including from your own accounts. 5. If what you found raises a genuine safety concern for you or your children, take that to the police or to a family court directly, as a safety issue. Do not treat more monitoring as the response. 6. Before using any of this in a divorce or custody case, show it to a family law attorney first. Ask specifically whether it will be admitted and whether its use creates any exposure for you.