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🔐 Unlock next-level security with Thetis Nano-C — your pocket-sized fortress for every login.
The Thetis Nano-C is a FIDO2-certified USB-C security key designed for ultra-portable, cross-platform two-factor authentication. Compact and lightweight, it supports passwordless login via WebAuthn and CTAP2, stores up to 200 FIDO2 passkeys plus 50 TOTP codes, and works seamlessly with Windows, Mac, iOS, Android, Linux, and major online services like Gmail and GitHub. Ideal for professionals demanding robust, future-proof security on the go.
















| ASIN | B0F3JX7F76 |
| Additional Features | Compact, Encrypted, Lightweight, USB C |
| Best Sellers Rank | #452 in USB Flash Drives |
| Brand | Thetis |
| Color | Black |
| Compatible Devices | Windows, MacOS, IOS, Android or Linux |
| Compatible Phone Models | Windows, Mac OS X, IOS, Android, Linux (Debian Based or Red Hat Based) and Chrome OS |
| Connectivity Technology | USB |
| Customer Reviews | 4.0 out of 5 stars 174 Reviews |
| Flash Memory Type | USB |
| Hardware Connectivity Technology | USB Type C |
| Hardware Interface | USB Type C |
| Item Dimensions D x W x H | 0.3"D x 0.6"W x 0.3"H |
| Item Weight | 1.13 g |
| Manufacturer | Thetis |
| Mfr Part Number | MB000504 |
| Model Name | Thetis Nano C FIDO2 Security Key |
| Model Number | MB000504 |
| Number of Items | 1 |
| Read Speed | 480 bytes_per_second |
| Special Feature | Compact, Encrypted, Lightweight, USB C |
| UPC | 850065774039 |
| Unit Count | 1 Count |
| Warranty Description | Standard Express Warranty |
| Write Speed | 0.4 MB/s |
C**D
Very compact.
Small and works as advertised.
M**E
Smaller than I anticipated
I have other Thetis Fido2 security keys and purchased this to use on my IOS devices. I found it too small for my tastes. Maybe I didn't read the description closely enough but I was expecting it to be larger. If you are looking for a small form factor USB C FIDO security key this is the one for you.
Z**G
exactly what it says it is
exactly as ordered
C**O
Does not work as advertised
Does not work with Microsoft products on a Home computer Windows 10 or google.
W**E
Easy to Setup and Just Works Even With a USB-C to USB-A Adaptor
Very easy to setup in Windows and add as a login in key for many accounts already.
1**6
Good fido key. Great value
Tiny, yet hold 2x more passkeys than yubikey at half the price (though 100 slots is still more than enough). Seems durable. It's so tiny so be careful not to misplace it though :)
F**N
Requires some dedication to setting it up
Had not use yet, didn’t have any time for setting it up yet
T**L
Excellent value!
Small form factor security key. Verified by me to work with Google accounts, Login dot Gov and Bitwarden. Excellent value for the money as compared to others that charge twice as much. Two things that I didn't like. The first is that you have to use the Thetis key manager application on Windows, Mac or a Linux computer to set the PIN on the key. Thetis does have an Android app however, that app doesn't have the ability to set a PIN on the key. This could be a limitation of the Android OS but I don't know for sure. The second issue I have is that the key should have come with a cap to protect the USB C connector. The key does work with a USB C to USB A adapter. Bottom line is that this is a good value but keep in mind that you will need a desktop or laptop to add a PIN to the key before you can start using it. If you laptop only has USB A connections then you will need an adapter. You might also want to get a lanyard for your new key.
I**Z
Cumple con lo esperado
Está perfecto y cumple con su función perfectamente, para activarlo necesitas tener un ordenador con Windows o Mac para instalar los drivers. Faltaría que tuviese NFC para mayor versatilidad
K**L
Trygghet
Snabb och säker lösning.
P**E
Opérationnel.
RAS. Ça marche parfaitement.
S**I
Chiavetta FIDO2 versione base e estremamente economica e funzionale
Oggetto pratico e con installazione pressoché zero: si infila nella porta USB-C del PC / Mac, si scarica l'eseguibile del programma di configurazione da far partire come amministratore del PC, e si può da quel momento utilizzare la chiavetta come magazzino delle passkey dei siti e dei più noti. Ad oggi, il concetto di passkey è poco considerato dalla maggioranza degli utenti, ma scoprire che senza password il mondo digitale è (al momento) migliore, rende più semplici tante cose, rendendo la sicurezza migliore.
C**S
I wish I’d known about this years ago
I am so happy I figured this out and made this purchase. Set up needed a couple of YouTube videos and some research, but it’s not particularly difficult. Via the web app, my US bank, Bank of America. recognised the security key online with no trouble and using it is straightforward. I’ve made two transfers now that required secondary proof of identity -- which used to involve my brother getting a phone call in the US and sending me the code -- and now involves me touching the security key. In two transfers I’ve saved enough in bank fees to pay for the key. The form factor means it can stay in the USB slot on the front of the Mac Studio all the time.
Trustpilot
4 days ago
5 days ago