> For the complete documentation index, see [llms.txt](https://documentation.rcore.cz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.rcore.cz/paid-resources/rcore_tattoos/integrations/tattoo-gun-item.md).

# Tattoo Machine Item

In the 2.4.0 version we added a new **server-side** function `CanEmployeeStartTattoo` into `server\api\helper.lua`.

You can use it to add your own integration to check if employee has a tattoo machine item for your inventory system.

If the function returns false, the employee will not be able to start tattooing the customer and you can notify them with a message about missing item. Returning true will allow them to tattoo the customer (default).

```lua
-- Optional hook for custom inventory/item checks.
-- Return true to allow employee to join/start tattooing, false to deny.
-- Params:
-- employeeId: server id of employee trying to tattoo
-- businessId: configured business id from ConfigBusiness.Businesses, e.g. "basic_job"
-- shopKey: current shop key used by session markers
-- customerId: server id of customer in session

CanEmployeeStartTattoo = function(employeeId, businessId, shopKey, customerId)
    -- Do not forget to notify the player if you are denying access
    -- so they are not confused why they cannot tattoo the customer.
    return true
end
```


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