 Can anybody join HIKI? Anyone who is autistic and over the age of 18 and we respect and honour self-diagnosis as well. Cool. That is a very good... I imagine it would be quite complex and legally complex to require people to give in their diagnosis forms. Yeah, I mean, for one, no one should ever have to prove their diagnosis no matter who you are or what it is and the system is so broken anyway. People of colour, women go undiagnosed and misdiagnosed at alarming rates and so, yeah, we respect and honour self-diagnosis if you're autistic and over the age of 18.