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Best security keys under £50 (2026)

The security keys we've reviewed that cost £50 or less, best first. Each is scored against products at a similar price, so a high score here means good for the money. Where we don't have today's price, we use the typical UK price we found when researching it.

Researched, not hands-on tested.How we review ›

  1. #1

    Yubico Security Key C NFC

    7.2/10verdict: good, not the best

    The Yubico Security Key C NFC is for people who want a passkey and two-factor key for logging in to online accounts. It suits those with USB-C laptops or NFC phones who don't need smart card, OpenPGP or OTP functions. Sysadmins who want more than FIDO sign-in should look at the protocols list before buying.

    FIDO2 CTAP 2.1, FIDO U2FUSB-C 2.0, NFCUp to 100 discoverable credentials on…5.8
    Read the full review ›
    Yubico Security Key C NFC
    £30typical UK price when researchedCheck price at Amazon UK (opens in a new tab, affiliate link)

    Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

  2. #2

    TrustKey T110 FIDO2 Security Key

    5.1/10verdict: good, not the best

    The TrustKey T110 is a USB-A FIDO2 key for people who want passkey or second-factor login on computers with USB-A ports. It suits those who want the listed resident key capacity and simple setup, and who can accept a lower certification level and no USB-C or NFC support. Buyers who need phone support, higher certification or published durability ratings should look at other keys.

    FIDO2, U2F, TOTP, HOTPUSB-AUp to 150 resident keysUpdatable
    Read the full review ›
    £15.99typical UK price when researchedCheck price at Amazon UK (opens in a new tab, affiliate link)

    Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

  3. #3

    Thetis FIDO2 Security Key (folding USB-A)

    4.4/10verdict: skip

    This is a folding USB-A security key for people whose computers have USB-A ports and who want a low-cost second factor. It suits buyers who check the exact model listing first, because the research is unclear on whether this version supports FIDO2 or only U2F. It is a poor fit for anyone who needs USB-C, NFC or documented certification beyond FIDO2 L1.

    FIDO2 and FIDO U2FUSB-A200 passkey slots
    Read the full review ›
    Thetis FIDO2 Security Key (folding USB-A)
    £18.70typical UK price when researchedCheck price at Amazon UK (opens in a new tab, affiliate link)

    Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details