The city of Rome is attempting to encourage recycling—and tackle its growing waste management problem—by allowing citizens to purchase metro tickets by recycling their waste plastic bottles. Tickets, which cost 1.50 euros, can be obtained by cashing in 30 bottles, after commuters scan a personal barcode from the MyCicero (travel) app on specialised recycling machines. The project is still in its pilot phase, due to last one year, and the machines have only been placed in three metro stations. However, citizens are eager to take part, and the success of the project could mean huge increases in the volumes of plastic Rome recycles.