When searching for scanner on the website there seem to be a flatbed scanner and a barcode scanner overlaid in the same slot.

Hi!
Thanks for being part of the Font Awesome Community and thanks for reporting this.
I can confirm, there is actually a bug in FA Pro CSS, with scanner-image and scanner icons sharing the same unicode point \f488
Demo: https://jsfiddle.net/tagliala/rLw7bxt4/3/
Let's assign both @robmadole @sensibleworld
@robmadole any chance to add a sanity check to prevent this in the future?
Thanks for the report! We're getting this fixed up in 5.11.2 shortly, and will definitely be adding a test for this.