> For the complete documentation index, see [llms.txt](https://docs.vida.id/identity-stack/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vida.id/identity-stack/verify/liveness/overview/liveness-threshold.md).

# Liveness Threshold

The liveness threshold is the score limit that decides whether a selfie is considered **live (real)** or **spoofed (fake)**. Every selfie checked by VIDA receives a liveness score between **`0 and 1`**. The threshold acts as the **cut-off point** for this score.

VIDA uses a default liveness threshold of `0.95`.

* If the liveness score is **< `0.95`**, the selfie is considered live and will be accepted.
* If the liveness score is **`=0.95`** or **`>0.95`**, the selfie is considered spoofed and will be rejected.

<table><thead><tr><th width="181.6953125">Liveness Score</th><th width="151.92578125">Result</th><th>Description</th></tr></thead><tbody><tr><td>&#x3C; <code>0.95</code></td><td>✅ Accepted</td><td>The selfie is recognized as live</td></tr><tr><td><code>=0.95</code> or <code>>0.95</code></td><td>❌ Rejected</td><td>The selfie is detected as spoofed or fake</td></tr></tbody></table>

The threshold represents the balance point between security and acceptance accuracy.\
A score closer to `0` indicates a higher confidence that the selfie is live, while a score closer to `1` indicates stronger evidence of spoofing.

<figure><img src="/files/xUC9sJ6LCvjq3sH0iRVL" alt="" width="563"><figcaption></figcaption></figure>

* The liveness score ranges from `0.0` to `1.0`.
* VIDA’s default threshold is set at `0.95`, which defines the separation between accepted and rejected selfies.

| ✅ Accepted Area                                                                                                           | ❌ Rejected Area                                                                                                                                       |
| ------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------- |
| Represents selfies with a liveness score **`< 0.95`**.                                                                    | Represents selfies with a liveness score `=0.95` or `>0.95`.                                                                                          |
| These selfies are classified as **live**, meaning the system is confident that the image was captured from a real person. | These selfies are classified as **spoofed** or **manipulated** because the score indicates signs of possible presentation attacks or image tampering. |