Wisconsin has become the third state to legalize the use of the automated robots. Virginia and Idaho passed passed similar legislation earlier this year.

The Wisconsin law places an 80-pound weight limit on the robots, and doesn’t permit the machines to travel faster than 10 miles per hour. The robots are also required to have a person in the loop to take over control in case something goes awry, according to ReCode.

The personal delivery devices (PDDs) will be used to deliver…