This is a concern for people who are living in difficult circumstances, particularly with domestic violence, with companions who might steal valuables, or similar circumstances, where the test would reveal presence of a concealed phone.
Even if you're not directly affected, should share information about the test and possible impacts with those around you who might be, so that they can disable or move any devices elsewhere on the test date.
Even if you're not directly affected, should share information about the test and possible impacts with those around you who might be, so that they can disable or move any devices elsewhere on the test date.