Many countries are still grappling with the issues of crypto-currencies such as Bitcoin, which is just the best-known of the virtual cash.
Payment card numbers may have been compromised, but the retailer says Social Security numbers, birth dates and customer PINs appear to be safe.
An integration with Shopkick will send deals to people's smartphones at the front entrance.
Gartner analysts expect worldwide tech spending to total $3.8 trillion in 2014, a 3.1 percent increase from 2013 spending of $3.7 trillion.
But the PINs were encrypted and therefore should be inaccessible to hackers, according to the retailer
The company blames delivery companies for the delays
U.S. desktop users spend $42.8 billion between Nov. 1 and Dec. 22
Let Google "pay" for the data they collect on you by sending a charitable donation via Google's dime -- by using Google Shopping Express.
Technologies like video analyzers and Wi-Fi trackers could find increased usage in stores.
American shoppers are still eyeing tablets, but two-in-one devices may satisfy some.