Thetis Pro-C FIDO2 Security Key Passkey Device with USB C & NFC, TOTP/HOTP Authenticator APP, FIDO 2.0 Two Factor Authentication 2FA MFA, Works with Windows/macOS/Linux/Gmail/Facebook/Dropbox/GitHub

I’ve been using the Thetis Pro Key for about a month, and I genuinely feel more secure online. Setup was straightforward—it worked flawlessly with both my Google and Microsoft accounts. It’s compatible with Windows, macOS, and even Linux, which is perfect since I work across different platforms. The build quality is excellent—it’s aluminium, not cheap plastic, and feels sturdy enough to survive daily use. The USB-C and USB-A connectors are a nice touch, especially since I use multiple devices. Its obviously FIDO2 certified, meaning it uses strong, phishing-resistant security. No more worrying about SMS codes or authenticator apps being hacked. I even tested it by trying to log in from an unknown device without the key and it blocked me, just like it should. Tip: Make sure you register it on multiple accounts and keep a backup key stored safely in case you lose it. Overall, this is one of the best purchases I’ve made for digital safety. If you care about online security (especially if you're in business, IT, or finance), this is a must-have.

This proved the only way to access our old US-based accounts from the UK as we didn't have US mobile phones for text codes any more. Simple. Easy. Tick.

Fold out design.

Great physical security device for 2FA authentication. I have only used this for some less important accounts (Google and Facebook). But honestly, I feel like Tom Cruise in Minority Report every time I use this. It works extremely well, and needing to have a physical device to access your account is a game-changer. I plan to use this on LastPass when I eventually get around to using it more. It has wide compatibility across multiple devices and browsers, too. Will update this review as I go. ★★★★★ - Excellent -- My ratings explained: ★★★★★ - Excellent: Outstanding product, exceeds expectations in all aspects. ★★★★½ - Very Good: High quality with minor imperfections, almost perfect. ★★★★☆ - Good: Solid product, generally reliable with room for some improvements. ★★★½☆ - Above Average: Performs well but has a few noticeable flaws. ★★★☆☆ - Average: Adequate, meets basic needs with visible areas for improvement. ★★½☆☆ - Fair: Below expectations, issues that impact user experience. ★★☆☆☆ - Below Average: Major issues, underwhelms in most areas. ★½☆☆☆ - Poor: Significant problems, needs substantial improvement. ★☆☆☆☆ - Very Poor: Fails on almost all counts, highly unsatisfactory.

Presentation The Thetis Pro-C FIDO2 Security Key Passkey Device is presented in a small branded cardboard box with a retail loop for a wire rack. Inside the box is a small cardboard tray (well done for the ecology consideration) containing the security key device itself and a small fold out user manual that also acts as a quick start instruction manual. First Impressions Taking the security key from the packaging and looking it over, it is a very small profile at 48 x 16 x 10mm and in the form of a flip out from a 360° cover, the cover being branded at the top which also has the illuminated touch button and having a QR code and details plus serial number on the bottom, a loop for a strap is also on the cover. The security key feels quite robust and is solidly built, and the USB C presentation is an obvious sign it was built recently for modern devices – reinforced by the fact it also supports NFC. Day To Day Use Unfortunately, despite the title stating “Thetis Pro-C FIDO2 Security Key Passkey Device with USB C & NFC, TOTP/HOTP Authenticator APP, FIDO 2.0 Two Factor Authentication 2FA MFA, Works with Windows/macOS/Linux/Gmail/Facebook/Dropbox/GitHub” and my being a Linux user on desktop and laptop, I could find no support or means of getting this device to work natively. Indeed there does appear to be some support if the supporting software is run in a ‘Firedrake’ virtual environment but I could not get this to install and work under Linux, and the download section of the Thetis website mentions Chrome, iOS, and Android – only one of which I use Android and that is on occasion. Summing Up This looks and feels like a well made, robust security tool for MFA etc but sadly does not support my environment so I cannot comment on its working as a passkey without such support and perhaps Linux should be removed from the title as it is misleading.

Awful experience. Firstly downloading the manager is a task in it's self kept "couldn't download contains a virus" slightly worrying for something supposed to keep you more secure. Eventually got around this by turning off all Chrome Browser Safe Browsing and Windows Defender. Then there's the hassle of opening it! Again had to disable Windows Defender and open as Admin. Right I thought should be ok... No this is as far as you get the software recognised the key was able to set a PIN and then since I haven't been able to actually register it. Google seems to have removed its security key management within Chrome and also hidden the option to add to your account under 'Passkeys' when wanting to add to your Google account. Unable to register it with Microsoft or Windows 10 Login. NFC doesn't appear to work on Samsung s25 despite downloading app and having NFC on. Really it's terrible - not sure if mine is faulty. I will be returning it as it's clearly not being picked up despite using different ports. Frankly whilst cheaper then other keys I wouldn't bother - this is not worth the money at all as it doesn't work. Smaller than shown/expected which is good.

Funciona como descrito.

Feels solid, and working great. Highly compatible with Samsung phones. I originally chose Yubikey but then had to return it since it wasn't compatible for android devices and the NFC and USB functionality was not working. This key isn't too large, fits nicely on my keychain to carry around with me. I honestly feel more protected now knowing that i have a easy to use this physical security key that safeguards the sources of digital vulnerability that I have taken for granted for way too long.

Suveränt smidig såväl hård- som mjukvara. Enkelt med alla lösenord, serienummer, programvarulicenser o.s.v. på ett ställe.

Ótimo chegou como combinado

I've been using the Thetis Pro-C FIDO2 key for a while now, primarily for basic two-factor authentication, and I'm quite satisfied with its performance. While I haven't explored all of its advanced features like TOTP/HOTP, everything I need it for works flawlessly. I use the Thetis Pro-C alongside a Yubico key, and I honestly can't tell the difference in speed or basic functionality. Both keys perform equally well in securing my accounts. This makes the Thetis Pro-C an excellent value proposition, offering comparable performance to more expensive brands at a more affordable price point. Pros: - Reliable FIDO2 performance - Comparable speed and functionality to Yubico keys - Excellent value for money Cons: - None at the moment * I haven't tested all advanced features! Overall: If you're looking for a reliable and affordable FIDO2 security key for basic two-factor authentication, the Thetis Pro-C is a great option. It offers solid performance and is a great alternative to more expensive brands. *** Top tip for those who say NFC doesn't work: *** The protective bracket that the key rotates in is made of metal (aluminum), which blocks the NFC chip. You must therefore unfold the key before you can scan it. This is a bit annoying at times, but on the other hand, it offers an extra layer of security.