Costco has been testing checkout technology it hopes will speed up the checkout process, something members rank as one of their significant concerns with the warehouse retailer.

CEO Ron Vachris said last week during the company’s third-quarter earnings call that Costco has "engaged in some ‘Scan & Go done by Costco’ kind of tests."

The technology has "been extremely successful in moving people through the lines and expediting the transactions," according to the Costco exec.

"We’ve seen some very, very early results have been very positive and great adoption from our members, seeing that as well," Vachris told analysts and investors.

Scan-and-go is something that Costco fans on social media have long said they wanted the retailer to bring to its stores , with some noting Walmart

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