The truly diabolical way is to add an image to your resume somewhere. Something discrete that fits the theme, like your signature or a QR code to your website. Then hide the white text behind that. A bot will still scan the text just fine… But a human reader won’t even see it when they highlight the document, because the highlighted text will be behind the image.

I wouldn't do that on your resume. Lots of these systems detect hidden text and highlight it for reviewers. I probably would see that as a negative when reviewing them.