So go to HR and say "please sign this form that says I make $X" rather than preemptively broadcasting it?

Here's how I imagine this goes down:

ADP Rep: "Hey, we have an exciting new feature to offer you! We partner with the worlds premiere credit and employment reporting agency to eliminate the hassle of salary and employment verification."

VP, HR: "Go on..."

ADP: "If you opt in to this innovative program, you'll never again have to respond to your employees' lenders or landlords. 97% of banks participate in this program. Instead of them asking their applicant—your employee—for paperwork that you have to deal with, they come direct to the source automatically. Again, this is at no additional cost. It's included with our Premium Payroll Plus offering. Interested?"

HR: "Yeah, of course. One less thing I have to deal with"

ADP: "And the best part is you'll then qualify for a substantial discount on our partner's Employment Data System. Rest easy with unlimited verification reports for all your prospective new hires"

HR: "Anyone ever turn this down?"

ADP: "Almost never."

This is exactly what happened when I applied for a mortgage here in Ireland. Seemed fine.