100 points of ID means different forms of ID which tally to 100 points. A passport or birth certificate is 70 points, Medicare card 25, utility bill 20. Here’s a guide: https://www.afp.gov.au/sites/default/files/2023-08/NPC-100PointChecklist-18042019.pdf
Never heard of that, still stupid, but makes a little more sense now, thanks 👍