Hi Willaim GM,

Odoo has this feature in version 8 but it is removed from community edition when they moved to odoo 9 edition.  But there are many third-party modules available in the odoo app store providing the same feature , you can use any of those modules.

Module from OCA: https://www.odoo.com/apps/modules/9.0/stock_scanner/

Also, we have a module for the same in v10, you can check its compatibility in v9 : https://www.odoo.com/apps/modules/10.0/inventory_barcode_scanning/

Thanks