> For the complete documentation index, see [llms.txt](https://speedatagroup.gitbook.io/uhf-rfid-users-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://speedatagroup.gitbook.io/uhf-rfid-users-manual/overview/uhf-background-services.md).

# UHF Background Services

## Used by background services.

* Focus output EPC
  * After checking, the EPC data that has been counted can be directly output to the focus of the cursor.
* Focus output TID or User
  * After checking, the data displayed by the cursor focus is not TID or EPC
* Prefix: add a prefix before each tag data
* Suffix: add suffix after each tag data
* Stop character: When the inventory is ended, the corresponding event or character is issued.
* ASCII conversion
  * The data entered in ASCII Hex format will be converted to ASCII display at the focu
* Long press continuous inventory: press and hold a key to start inventory, release to stop.
* filter:
* Custom Broadcast: It is used for the user App to accept the tag data sent by the broadcast, and the broadcast can be customized。
  * Custom broadcast Inetnt
  * EPC Intent key
  * TID  Intent key
  * RSSI Intent key
* Handle key configuration: deprecated