Uber Technologies will begin charging riders for leaving items in cars that drivers then have to return to them, the ride-hailing company announced on Tuesday.

It will now cost passengers $15 to have their lost items returned. The service will roll out in Boston and Chicago on Tuesday, and expand to all U.S. cities by September.

The initiative is in conjunction with Uber's pledges to take further steps to support their drivers. Uber recently started giving its riders the option to add a tip for their driver. 

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