Biometric authentication wouldn't work. Took my print several times but couldn't validate it, so I had to stick with PIN. Requires IOS or Android to actually setup any accounts (Ledger provides an interface so you can setup via PC or Mac, too).Requires bluetooth to interact with the phone app, I despise using bluetooth so more marks lost.I've now been told the device needs a firmware update but this can't be done via Bluetooth from the app so you have to go to a website. I done this via my Mac and the website says this can only be done via PC using Google Chrome!So we're not off to a great start. If I had known these things before purchase I wouldn't have bothered.