Mobile POS company Square announced its card reader can now be purchased at more than 20,000 retail locations across the U.S, including Walgreens, Staples and FedEx Office stores.

"Accepting credit cards should be as easy as buying supplies at your local store," said Jeffrey Kolovson, head of retail distribution at Square.

Kolovson said Square is working with the retailers to give business owners convenient access to the Square Card Reader.

Already available at Target, Best Buy and Apple stores, the card reader will now be stocked in more than 7,000 Walgreens stores, 1,500 Staples stores, and 1,500 FedEx Office stores.

As at other retail outlets, the Square Card Readers will sell for $9.95, but new customers will receive $10 in their Square accounts when they sign up.

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