Its not a "don't have it" but don't walk around with one and fiddling with it / sniffing / doing replay attacks." The thing that you don't want to do is go wal

Its not a "don't have it" but don't walk around with one and fiddling with it / sniffing / doing replay attacks." The thing that you don't want to do is go walking down a hallway in a hotel (which are of course under video surveillance) and have a utility room door pop open. Teaching people how to pick locks in Vegas isn't a problem ( https://youtu.be/J5t9uPnXemU https://youtu.be/J5t9uPnXemU ). If you have a legitimate use - go for it. If its "I brought mine because I'm going to a hacking convention in Vegas" it is now a "think about if you really want to be carrying it around" - its more likely to borrow trouble and if you "accidentally" open up some place you shouldn't have access to, it makes things worse.