Costco CEO Ron Vachris explained the benefits of the company's new membership card scanners in U.S. stores during the retailer's latest earnings call, and said customers see the pluses.

NEW YORK--(BUSINESS WIRE)--SmartMetric, Inc. (OTC: SMME) the miniature nano fingerprint scanner built by SmartMetric to fit inside a standard credit and debit card takes credit card security to ...