Customers looking to add cash to their Amazon balance have a new option.

Amazon today announced an integration with Coinstar, which is adding Amazon Cash deposit capability at its coin-counting kiosks.

Amazon Cash debuted last year and lets people pay for products on its site without the need for a credit/debit card or bank account, and without any fees.

Now at select Coinstar kiosks with bill acceptors, customers can deposit paper bills (not coins) into their Amazon Cash account for any amount between $5 and $500. There are no fees required to use the new service, which only requires a phone number for an Amazon Cash account.

Bellevue, Wash.-based Coinstar expects around 5,000 kiosks to have the capability by the end of the year. It is rolling out the feature at select grocery stores in the northeast.

Founded in 1991, Coinstar operates nearly 20,000 kiosks. The company was previously owned by Outerwall, which was acquired by Apollo Global Management in 2016. Apollo split Outerwall’s three core businesses — Coinstar, Redbox, ecoATM — into separate enterprises.

Coinstar continues to add new capabilities to its kiosks. Last month it announced an integration with Seattle startup doxo that lets people pay bills at the kiosks.

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