Earlier quoted context omitted.
similar when it comes to scanning a "code" for the login process. The main difference is that clef relies on API, or plugin integration. For clef to work on a website it has to be installed by website owner, hence their growth depends on website owners adoption rate. With keyless you identicate once, at its compatible with most site's out of the box: no code for the website owners to change/add.
"no code for the website owners to change/add" How do they get the barcode on their site?
You only need to scan the code once on the keyless.io site. No need to scan again for each visited websites.