Sure, I understand Host's concern, but isn't there this whole thing of Hosts leaving reviews of Trevellers? I would have no problem of giving my ID if they hadn't forced everyone into a relationship with this Jumio company that handles ID verification supposedly, and please read what they have to say in their Privacy Policy:
Jumio may use the Personally-Identifying Information a user submits for any purposes related to Jumio's business, including, but not limited to providing you with Jumio's services and personalizing and improving those services for you.
This is completely unbelievable! They are flat out saying they will use user submitted data anyway they see fit for their business! Selling it? Sure, what's stopping them? I think Hosts and Travellers know way too little about this whole process. But it is definitely not as innocent as they make it to be.