What does “for earlier detection” mean?

It’s used here, on Breastlight’s home page. If you search for them on Google, it comes up; “Breastlight TM; breast exam, breast checking, breast screening..”

I’d like to know what kinds of things come to mind when we are told this device is for ‘earlier detection’.

 

 

( I know what I think, but I’d like to know what others think.)