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 was a little skeptical of buying this security key since YubiKeys are so widely recommended above all else but I’m been very impressed. I can confirm it is FIDO2 and can store TOTP’s within their apps. It does everything as advertised and I recommend this key as either your main key, or a fantastic cheap backup. I’ll go more in-depth below!! Hardware wise, it does feel a little cheap but I don’t feel like it would break within a month and for the price, it’s expected. I do like that it has the folding protector that covers the USB C port and makes it more modular. The button is also located on top so it’s very convenient to press and feels very nice. Software-wise, it does exactly what you would expect and works as advertised. It has NFC, FIDO2, WebAuth, and TOTP/HOTP support via their app which is on all PC and mobile platforms. Overall, I’ve been very impressed with this key and if you want the features of the 5 series YubiKeys without the high price (since you need a backup keep so that price adds up) and a built-in protector that makes it more portable, you can’t go wrong with this key and it’s especially recommended if you’re simply looking for a cheaper backup key.

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.

Device works as intended, but setting up is a little bit tricky. Software can be a little rough around the edges, and it takes a couple of extra clicks to choose a physical authenticator security key instead of a digital one, but it works perfectly once set up. It is small, easy to use, easy to carry around, and feels built well. This product is very solid, and works with windows devices well (I have not tested with other operating systems).

I think this key is the best bang for your buck compared to other brands especially because it's Fido2 with NFC. I skipped out on the more well known/popular brand because these are half the price and I wanted to buy 2. $50 for a main key and a back up is great considering this lil key could potentially save your bank accounts from being drained one day or scammers getting onto accounts with your card info. I also chose this key because I like the design and how it can be folded to cover the USB-C so you don't accidently bend it or something while carrying it around. You also don't have to worry about it falling out of the holder like the super tiny keys. So this one is great to have on your keychain. I use one of the more expensive keys for work and compared to this brand I would say set up and use if pretty much the same and it's very simple to use. For me, the only con to this key is that using NFC is kinda finicky. It's not that it doesn't work BUT with this one you have to have it held up to your phone precisely or it will not read. So that's kinda eh to me but I still love it. And for those of you who are new to using these, it's fairly simple to use even if you're not tech savvy. Scan the QR code on the device or got to their website and download their program so you can set your pin and then you're good to go. - Sign into the accounts you want to use this device with (not all websites support this feature yet btw) - open your security settings - set it up would just set it up as you would 2 set authentication. You should have the option to choose "physical key". Plug it in, type in your pin, press the lil button on your key and you're golden. You'll use that same method when you login.

During setup my PC notified me that “Shenzhen Excelsecu Data Technology Co., Ltd” had installed items that would run in the background. This alerted me that this security key is made by a Chinese company. That destroyed my trust in it as security. I wiped the files and discarded the key.

great product but does not have NFC

The Thetis Pro-C FIDO2 Security Key is hands down the best security solution I’ve used for protecting my online accounts. Its build quality is top-notch, with a sleek metal design that feels durable yet lightweight. Setting it up was surprisingly easy—it works seamlessly with major platforms like Google, Microsoft, and even password managers like 1Password. The USB-C connection is fast and reliable, and the key has NFC functionality, which is perfect for securing accounts on my phone. I also love that it’s FIDO2 certified, ensuring the highest standard of security without relying on SMS codes or other outdated methods. What truly stands out is its consistency—it’s incredibly responsive and hasn’t let me down once. For anyone serious about safeguarding their digital life, this is a must-have. Highly recommend!

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

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.

I’ve been trying out the Thetis Pro-C FIDO2 Security Key, and my initial experience has been positive. Setup with USB-C and NFC worked smoothly, and the device responded consistently during my authentication tests. I also appreciate that it supports TOTP/HOTP, which gives me more flexibility across different accounts. The first thing I noticed was the build quality. In my opinion, the design feels more refined and substantial compared to some other security keys I’ve used. The metal housing gives it a more premium feel in the hand, and the overall fit and finish look thoughtfully put together. The LED indicator is subtle and blends well with the design—nothing flashy, but it has a cleaner and more modern appearance to me. The device also feels secure on a keychain without being bulky. NFC worked reliably during my early tests, and tapping into mobile authentication felt intuitive. As with any security device, I’ll continue testing it over time, but my first impressions are that it delivers a good balance of durability, aesthetic appeal, and functionality. So far, the Thetis Pro-C strikes me as a solid choice if you want a security key that not only works well but also feels well-made. I’ll update my thoughts if anything noteworthy comes up with longer use.

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.

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