バックパック禁止!! - Scratch is a Chrome add-on developed by katsuhiro97zarigani. It falls under the category of Browsers and is specifically classified as an Add-ons & Tools subcategory. This program aims to disable the backpack functionality in Scratch.

The add-on achieves this by hiding the backpack feature using the CSS property "display: hide;". However, it should be noted that determined users can still find a way to reveal and access the backpack if they are persistent enough.

It is important to highlight that this add-on was created for educational purposes. It serves as a tool to restrict the use of the backpack feature within the Scratch environment, potentially encouraging users to find alternative ways to store and organize their assets.