# Scan
### Scan tools
#### Scan lists and trees
Select a list (or tree) field and open the properties tab in the right sidebar. Open the group List and enable - disable the checkboxes for NFC, QR , Barcode
#### Main scan on a form using subforms
Select the **form page** and open the properties tab in the right sidebar. Open the group "**Scanning"** and select the property "Main scanning subform". Select the subform you are going to use for scanning.
Select the **subform field** and open the properties tab in the right sidebar. Open the group **Definition** and select the property "Form definition". Here you can set the main actions, types and variables for scanning.
#### Navigational scan
Navigational scanning is possible when enabled under Settings - General settings. This type of scanning can be used in relation to the creation of [**database tags**](/any2info-academy/no-code-platform/tools/database-tags.md).
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