> For the complete documentation index, see [llms.txt](https://doc.sysdevmobile.com/kalipso5/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.sysdevmobile.com/kalipso5/developing/form/controls/events/scanner-trigger-pressed.md).

# Scanner Trigger Pressed

This Event is triggered when the scanner trigger is pressed

{% hint style="info" %}
This event is for Zebra, NordicID and Cipherlab.

* Zebra - it is available in Windows CE/Mobile and Android. In order for this event to work a call to ZebraScanConnect or ZebraRFIDConnect actions must be called. If you call ZebraScanConnect and after ZebraScanDisconnect, the event will continue to work.
* NordicID - it is available for Android only. In order for this event to work a call to NordicIDNURConnect action must be called. If you disconnect this will event stop working.
* Cipherlab - it is available for Android only. In order for this event to work a call to RFIDConnect action must be called. If you disconnect this will event stop working.
  {% endhint %}

#### Event available on the following operating systems

![](/files/-MGIiDGuNcrVFP-DbUma)