Electric scooter sharing systems have become popular in the past few years as an alternative form of transportation. They first came to Portland in July 2018, after being approved for a four-month pilot program. Scooters returned to Portland in April 2019 for a one-year program after positive review by the city of the first program. The system works much like most bike share systems which have also become popular in Portland and around the world. Users unlock and pay for a scooter with an app on their smartphone and then can drop it off anywhere when done with it.