Their authentication check doesn't do much. They aren't validating drivers licenses against a database. Has anybody tested this thing with common fake IDs? If you show it a color copy of a driver's license, can it detect that? How? They're looking only at a flat photo. They can't tell a hologram from a photo of a hologram. They don't make you take pictures from several different angles. You could probably take a picture of an ID, alter it in Photoshop, and get it through this thing.
Their privacy policy looks like a standard web site privacy policy. It says nothing about how they handle ID data. That's a big deal, because Confirm is handling personal data that isn't about Confirm's own customers. This can create liability for Confirm or Confirm's customers under various identity theft laws.
Here's their founder: [1]
[1] https://www.linkedin.com/in/kylekilcoyne