This is an interesting point actually. I don't remember showing any ID (definately not a drivers licence etc). We had to give them all our medicare details etc when we signed on for a cycle but by that time I'd been seeing our FS for a few months, had a lap done with him etc etc so had filled out heaps of paperwork.

I know we both had to sign paper work to start the cycle and had to decide and sign on what would happen if one partner was deceased etc but I don't remember if DH signed the paperwork during the cycle (EPU, transfer etc).