Walmart now offers bitcoin at 200 of its stores

Bitcoin could now be purchased at Coinstar kiosks inside 200 Walmart stores in the US.

This move is part of Walmart's pilot program with Coinstar, which is offering bitcoin at more than 8,000 kiosks.

Coinstar's machines allow customers to exchange US coins for paper bills or gift cards.

To buy bitcoin at Walmart, customers must open an account with cryptocurrency exchange Coinme. They would have to use paper money, as coins are not accepted.

Customers would also be charged a transaction fee of 4 percent and a cash exchange fee of 7 percent for each purchase.

The purchasers would then receive a voucher that can be redeemed for bitcoin instantly at Coinme.

Walmart is ascertaining how cryptocurrency could fit into its business, even posting a job offer for a digital currency and cryptocurrency product lead in August.

The digital currency expert would "drive the vision for the product and capabilities roadmap.”