---
id: post/aardvarklabs-blog/2827
type: post
title: How to Use Concealed Text Fields in Business Central AL
summary: Business Central 27.1 introduces Concealed Text Fields, which mask sensitive data during input to prevent shoulder surfing and screen captures. Developers can enable this feature through Feature Management and apply the MaskType property to Code, Text, Decimal, and Integer fields.
tier: community
language: en
tags:
  - security
  - sensitive data
  - field masking
  - al development
  - feature management
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    url: https://aardvarklabs.blog/2025/11/14/how-to-use-concealed-text-fields-in-business-central-al/
    title: How to Use Concealed Text Fields in Business Central AL
    date: "2025-11-14"
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    url: https://aardvarklabs.blog/2025/11/14/how-to-use-concealed-text-fields-in-business-central-al/
    title: How to Use Concealed Text Fields in Business Central AL
    date: "2025-11-14"
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    quote: Business Central 27.1 introduces the Concealed Text Field to solve this problem!
  - kind: blog
    url: https://aardvarklabs.blog/2025/11/14/how-to-use-concealed-text-fields-in-business-central-al/
    title: How to Use Concealed Text Fields in Business Central AL
    date: "2025-11-14"
    commit: null
    t: null
    quote: This will work on Code, Text, Decimal, and Integer fields.
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post_id: "2827"
source_id: aardvarklabs-blog
source_name: Aardvark Labs
url: https://aardvarklabs.blog/2025/11/14/how-to-use-concealed-text-fields-in-business-central-al/
published_at: "2025-11-14T13:00:00.000Z"
author: Marcel Chabot
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words: 189
quotes:
  - text: Business Central 27.1 introduces the Concealed Text Field to solve this problem!
    why_it_matters: Indicates the exact version where this security feature became available
  - text: This will work on Code, Text, Decimal, and Integer fields.
    why_it_matters: Clarifies the scope of field types that support the Concealed masking feature
code_objects_mentioned:
  - other Feature Management page
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versions_mentioned:
  - "27.1"
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# How to Use Concealed Text Fields in Business Central AL

[Read the post](https://aardvarklabs.blog/2025/11/14/how-to-use-concealed-text-fields-in-business-central-al/) · Aardvark Labs (Marcel Chabot) · 2025-11-14 · 189 words · tier community · reviewed (checked by Opus)

> Business Central 27.1 introduces Concealed Text Fields, which mask sensitive data during input to prevent shoulder surfing and screen captures. Developers can enable this feature through Feature Management and apply the MaskType property to Code, Text, Decimal, and Integer fields.

## Key points

- Concealed Text Fields mask user input to protect against shoulder surfers and screen captures
- Feature requires Business Central 27.1 and must be activated via Feature Management
- Developers set MaskType = Concealed on field definitions in AL code
- Works with Code, Text, Decimal, and Integer field types
- Complements existing security tools like SecretText and Isolated Storage

## Quotes

- "Business Central 27.1 introduces the Concealed Text Field to solve this problem!" (Indicates the exact version where this security feature became available)
- "This will work on Code, Text, Decimal, and Integer fields." (Clarifies the scope of field types that support the Concealed masking feature)

## AL objects mentioned

As named in the post. A name that matches one object page by exact type and name links to it; the others stay as named.

- other "Feature Management page"

## Context

- Features: Concealed Text Field, MaskType property, Sensitive data masking
- Versions: 27.1

Source: Aardvark Labs, community blog. Summary, key points and quotes are derived (CONTENT-NOTICE.md); read the original for the full text.