Idle hands are Santa’s tools as more holiday shoppers use downtime for mobile buying By: MarketWatch November 09, 2018 at 16:09 PM EST More advanced smartphones and more adept consumers could make this the ‘milestone’ year for mobile shopping. Read More >> Related Stocks: Adobe Systems MasterCard Online Retail Amplify ETF S&P Retail SPDR Salesforce Wal-Mart Stores, Inc.