- a tattoo may be a strong indication that, some time ago, you had an opinion, but it isn't any kind of indication that you still are of that opinion (including a timestamp in your tattoo is an option, but impractical). A signed statement in a bracelet, on the other hand, can be updated regularly, and even if it is not updated, the fact that you still are wearing it can be seen as confirmation that your opinion hasn't changed.
- a tattoo may be a strong indication that, some time ago, you had an opinion, but it isn't any kind of indication that you still are of that opinion (including a timestamp in your tattoo is an option, but impractical). A signed statement in a bracelet, on the other hand, can be updated regularly, and even if it is not updated, the fact that you still are wearing it can be seen as confirmation that your opinion hasn't changed.
- regulations.