# Sensitive data mask

Sensitive data masking is used to hide sensitive parts of information in a text field or label by replacing selected characters with a symbol `*`. This makes it possible to protect data such as a PESEL number or credit card number so that they are not fully visible on the screen. The property **Sensitive data mask** can be found in the component properties panel, in the section **Security**. After enabling masking, the specified characters of the field value will be displayed as asterisks.

<figure><img src="/files/efa9b730fe58cb6541866e9b4ce954b42041dcbe" alt=""><figcaption><p align="center"><em><strong>Figure 1.</strong> Sensitive data mask in the Text Field</em></p></figcaption></figure>

It should be remembered that sensitive data masking **works only for fields populated with data from another source** (e.g. a value retrieved from another field or service). If the user **enters** data into the field themselves, the mask will not be applied – the entered characters will remain fully visible. For example, if the text field *A* is automatically filled with a value copied from another field *B* (data source from another field), then a mask can be applied to field *A* to hide part of the information. However, if the user enters data in *A* manually, masking will not work.

Masking can also be applied to components of type **Label (Text)** displaying application data. In the case of a label, in addition to simply enabling masking, an additional option is available **Sensitive data masking condition** – it allows you to define a condition (logical), when met, the given label will mask its value. This makes it possible, for example, to mask a PESEL number only for certain user types or in specific process states.

<figure><img src="/files/407ec81fb2db13524b0905b84495e4e954080f3c" alt=""><figcaption><p align="center"><em><strong>Figure 2.</strong> Sensitive data masking condition in Label</em></p></figcaption></figure>

{% hint style="info" %}
Note: Do not combine Sensitive Data Masking with other formatters on the same field. For text fields, it is recommended not to apply sensitive masking at the same time as a formatter (e.g. phone number formatting) to avoid conflicts and unexpected formatting behavior.
{% endhint %}

{% hint style="info" %}
Demo request: demoTextComponents
{% endhint %}


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