Possibly a middle ground is not actually needed- a “do not initiate physical contact” tag could serve the purposes of both people who do not want hugs at all, and people who are okay with hugs from certain people, but do not want others to initiate. Anyone can hug someone with a “do not initiate contact” tag with permission or the other person’s initiation, but nobody with such a tag is required to give either.
However, I think it’s probably preferable that both hugging and non-hugging people wear tags, rather than specifying only one. Even if one group is in the majority, I think that people in the other group are less likely to feel uncomfortable by marking themselves out with explicit signs if the other group is also wearing signs. Plus, it can help foster a standard etiquette of “examine tag before initiating hug.”
Possibly a middle ground is not actually needed- a “do not initiate physical contact” tag could serve the purposes of both people who do not want hugs at all, and people who are okay with hugs from certain people, but do not want others to initiate. Anyone can hug someone with a “do not initiate contact” tag with permission or the other person’s initiation, but nobody with such a tag is required to give either.
However, I think it’s probably preferable that both hugging and non-hugging people wear tags, rather than specifying only one. Even if one group is in the majority, I think that people in the other group are less likely to feel uncomfortable by marking themselves out with explicit signs if the other group is also wearing signs. Plus, it can help foster a standard etiquette of “examine tag before initiating hug.”