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OnlyKey DUO

OnlyKey DUO is a hardware security key that eliminates password reliance through multi-factor authentication and cryptographic credential storage

Security·Launched Apr 2026·0 upvotes·onlykey.io

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DEAD (5xx)since Jul 13, 2026 · HTTP 503

CohortClass of 2026

What it is

OnlyKey DUO is a hardware security key that eliminates password reliance through multi-factor authentication and cryptographic credential storage. It supports FIDO2, TOTP, Yubico OTP, SSH, and OpenPGP across both USB-A and USB-C interfaces for universal device compatibility.

HTTP liveness

11 probes since May 23

May 23Jul 13

AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)

Observed events

probes · press · GitHub

Jul 13, 2026
Went dark
Dead · 5xx
May 23, 2026
First probe — live
Alive · 200 OK

Funding history

1 round

Total raised

$5.0M

Latest valuation

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Stage

seed

Lead investors: OnlyKey, LLC

Seed

Jan 2020

OnlyKey, LLC

$5.0M

source

Data from SEC EDGAR Form D filings and press coverage. Round labels for SEC filings are inferred from filing sequence and amount.

Moat

None apparent

Multi-factor authentication and cryptographic credential storage.

moderate · 0.90 confidence

Text classification · Jun 2026

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