Check if a two-factor login code is valid automatically

Given a user's two-factor secret and the code they entered, the system checks instantly whether it's correct.

How the work actually flows

A straight line.

Pattern: Sequence (1)

flowchart TD trig>"verification request received"]:::trig s0["generate current valid code"]:::task s1["compare to provided code"]:::task s2["return match result"]:::task trig --> s0 s0 --> s1 s1 --> s2 out[/"pass or fail result returned"/]:::out pay{{"reliable custom login verification"}}:::pay s2 --> out out --> pay classDef task fill:#e7f6fe,stroke:#34b8f0,color:#2c2a29 classDef svc fill:#f6f8fa,stroke:#7c8795,color:#2c2a29 classDef mi fill:#e7f6fe,stroke:#0079a8,color:#2c2a29,stroke-width:2px classDef human fill:#fff,stroke:#0079a8,color:#0079a8 classDef store fill:#f6f8fa,stroke:#0079a8,color:#2c2a29 classDef trig fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigtime fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigdata fill:#8ad4f5,stroke:#0079a8,color:#06314c,font-weight:bold classDef gate fill:#fff,stroke:#e8a23d,color:#6b4708,font-weight:bold classDef out fill:#1f9d6b,stroke:#167a53,color:#fff,font-weight:bold classDef pay fill:#06314c,stroke:#021f33,color:#fff
Starts itA stepResultPayoff
Build size
Standard

A mid-size build with several tools working together.

Business functions
General Automation
Connects
Your existing tools

The problem it solves

If you're building or maintaining a login system with two-factor authentication, you need a reliable way to check whether the code a user typed in actually matches their secret. Doing this by hand isn't practical, and you may not want to rely on a dedicated third-party security tool. You need a lightweight way to run that check as part of a bigger process.

Who it fits

Developers or IT teams building custom authentication checks into an existing login or verification process.

How it works

  1. You provide a user's two-factor secret and the code they entered
  2. The system generates the current valid code from that secret
  3. It compares the generated code to the one provided
  4. You receive a simple match or no-match result
What you get

Login codes verified without writing the check yourself

You get an instant match check confirming whether any two-factor code matches its secret correctly.

What you get

A pass or fail result confirming whether the login code is valid.

What you need

No external account is required; it runs on data you already have.

We can build this. But should you?

The hard question is not how to build it. It is whether this is the right thing to build first.

That is what a Fractional Chief AI Officer figures out with you, before anyone writes a line of code.

Let's Talk Strategy

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