Google glass can be used to help give contextual information, in this case analyse the facial expressions of the people in front of you and notify them to the wearer, so they can learn to recognise them with practical examples and also helps them navigate the real world.
Full article: https://www.forbes.com/sites/johnnosta/2018/01/04/google-glass-is-a-hit-for-children-with-autism/#cc8565442042
Research paper: https://humanfactors.jmir.org/2018/1/e1/