Can't help as I am lucky enough to be married to another autistic person ( she is lovely) we get close when we want but we understand if we don't want. ( just got told no you don't You pester)
I've got the ARGH alert card and it's great, no police badges, no being registered and on a database. The wording is perfect for me and it's purple. (oh and no NAS)
Here's the link again:
http://www.arghighland.co.uk/arghcard.html