Retail giant Costco is using a new method for cracking down on non-members who shop at their stores. In most cases, in order to enter a Costco, you have to show your membership card to an employee.

SAN FRANCISCO — Every once in a while, an email or Facebook posting makes the rounds sounding alarms over the supposed danger of used hotel card keys. To stay safe, the reasoning goes, travelers must ...

Are you able to get into your office by simply bumping your purse or wallet against a reader? Then your office is using radio-frequency identification cards, or RFID cards, to manage building access ...

Knowing how to use a machine that scans credit cards will help speed up the checkout process for your customers. This will help ensure your customers' final contact at your store is pleasant, quick ...