Morality badge

Suppose there was a badge that said "I am a Moral person", that you could put on your person such that everyone you met could see it instantly. Let's look at how some increasingly advanced versions of this could work.

The Free-for-all Badge

The badge is just a pin that you can buy for a dollar and put on your coat. No background check is needed. This is very exploitable. Even if the free-for-all morality badge got a good start and won a lot of social capital, it would lose its magic after just a couple of instances of people wearing the badge behaving badly in public. 

The Lame Badge

The badge is something that makes you seem very uncool, even once people realize that it is correlated with high morality. This way, the Lame Badge wearers are protected from posers, but on the other hand they do not reap any social benefits except from each other. 

The Cumbersome Badge

The badge is something that requires a lot of work to maintain, for instance a habit. The status value of the Cumbersome Badge is limited by the amount of work that it takes to maintain. If the status is increased, for instance by an authority figure advocating the Cumbersome Badge openly, then posers will move in. 

The Permanent Badge

The badge is something like a public vow or an alteration of the body. If the badge can't be backed out of or reverted, then others can rest assured that if the person behaves badly, then they will face the consequences of their actions. The power of the Permanent Badge is inversely proportional to how easy it is to back out of the arrangement. 

The Tribal Badge

The badge is something that affiliates the person to a tribe that is recognized as being of high moral standing. Others can then rest assured that the person fears the consequences of their tribe enough be careful not to ruin the tribe's reputation. The power of the tribal badge is proportional to the person's status within the tribe. 

Examples

Free-for-all: pink ribbon, slacktivist profile picture.

Lame: geek wear, Jehovah's witnesses attire.

Cumbersome: ostentatious recycling, churchgoing (partially).

Permanent: Monk vows, marriage vows (as they worked back in the day), tattoos. 

Tribal: Wearing a Google shirt (if you work at Google), political party pins.