Another change for the version 4.2.1 is that you can now add show product's image in the search list from Sell page.
When searching for an item or a product, you can now see the product's image to make sure that is the right one.
To enable this feature, from Back Office > RockPOS > Manage > Setup > Products > Enable the option "Images on the search bar"
The product's image will be displayed after the option is enabled:
If you do not want to show the product's image, simply disable the option.