Juul incentivizes retailers to use its age-verification system

• The system blocks the sale of any Juul product until the retailer scans an official government ID.
• It also "limits each purchase to a maximum of one vaporizer and four refill packs."

The big picture: Some retailers have already taken matters into their own hands. Rite Aid and Walgreens have raised the age to buy tobacco in their stores to 21.

• Senate Majority Mitch McConnell wants the federal government to make a similar move.

What's next: Juul says 40,000 stores, including some major convenience store chains, have already agreed to install the system, per the WSJ.

• Juul plans to stop selling to retailers who don't use it by May 2021.

Go deeper: Juul's growing kids crisis