What should you do if a smart device is powered on and locked?

Attempting to get the password from the suspect is a strategy that can potentially yield immediate access to the locked device, which may be essential for the investigation. Gaining the password through lawful means, if feasible, helps maintain the chain of evidence and allows for the proper examination of the device’s contents. It's important to ensure that any method used respects legal boundaries and the rights of individuals involved.

In contrast, removing the battery could lead to unintentional data loss, which is a significant risk since data can be altered or become corrupted if the device is improperly powered down. Turning the device off may also lead to issues, as devices can have volatile memory that loses data when powered down without following proper procedures. Contacting a professional might be necessary in certain complex situations, but this option does not provide immediate access and delays the investigative process.