Walmart trying out robots in some stores

Walmart is testing out a new way to figure out what items are out of stock in stores.

The retail company is using robots to scan the aisles in some stores in Arkansas and California.
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The robots can check for missing items, incorrect prices and missing labels.

Walmart's CEO said the robots are more efficient and quicker than human employees.
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They may be added to stores in all states by 2018.

RELATED: Researcher, students build robot that can pick up objects

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