Nitrokey Passkey vs Titan Security Key

Nitrokey Passkey has no write-up on Specifiction yet; its figures are above.

Titan Security Key is a physical authentication key intended to help prevent phishing and block unauthorized access to online accounts, including Gmail. Current USB-A and USB-C models support NFC. The keys use FIDO open standards, Google-engineered firmware that verifies integrity, and a purpose-built secure element chip designed for high-assurance security products. They are compatible with Google’s Advanced Protection Program, Google and Google Cloud services, and other sites supporting FIDO CTAP1. Computer use requires USB and a current browser supporting W3C Web Authentication; listed browsers include Chrome, Firefox, Opera, Edge, and Safari. Google lists Windows 10 build 1903 or later for USB use. NFC works on compatible Android 9 or later and iOS 13.3 or later devices, while compatible Android devices can also connect through USB. For iPads with iOS 13.3 or later, Google lists USB support but no NFC. The listed Titan Security Key price is $30 as a one-time purchase, with USB-A/NFC or USB-C/NFC and free shipping.