If it's a dangerous item that shouldn't be just left lying around or flashed about in the bar to impress people, then it's contraband.
Generally speaking, if they're kept in their appropriate department or being used by authorised persons, they're not contraband. These items are not always contraband for the crew to possess, but may be considered so under certain circumstances. If an item is potentially harmful, that does not necessarily make it contraband as long as its harmful nature is not the intended use of the item. Items used as part as somebody's job, kept within the bounds of that department, are not contraband. This includes insulated gloves and the like. Again, may be confiscated if used in the commission of a crime. If used to alter someone against their will, then this is considered assault. While many of these items may potentially allow a user to gain access to restricted areas, having the means to bypass access restrictions isn't necessarily a crime - using it is, and some jobs are even expected to gain access to normally-restricted areas as part of their duties, such as engineers or doctors responding to emergencies. Generally, contraband charges wouldn't apply to the first offence, but if the items are confiscated for another crime, contraband charges may apply if they are found with the confiscated items. If they are used in a crime, however, they may be confiscated as evidence. The following items are generally not considered contraband for anyone. Is it intended to cause bodily harm to somebody other than the user, or designed with the intention of breaking into places ( such as an emag)? If yes, it's major contraband.Is it dangerous in any way to the user or anyone else? If yes, it's at least minor contraband.Is it not on the list of contraband items on the Wiki? If it's not on the list, it's probably not contraband.Do they have a permit to have it anyway? If yes, it's not contraband.Is the person allowed to have it as part of their job? If yes, it's not contraband.