I have only been asked for a deposit and a photo once. The photo request is because I had told the provider that I we had met at a Palm Springs "event" and he indicated that he didn't remember me, but maybe a photo would trigger his memory. In that light, I agreed to provide the photo and sure enough, he was able to recall some of our conversation. As to the deposit, I also paid it and wouldn't you know, it was the only time I've ever had to cancel on a provider, and with less than 24 hours notice at that.