Amazon's Prime Day sale is causing headaches for customers (updated)
Some customers aren't able to check out during the company's big sale.
Etsy's payment system is causing major problems for merchants
An outage currently going on five days is the source of some major headaches for the retailer.
Walmart Pay arrives in 14 more states (update)
California, New York and Washington are among those getting the mobile payment system.
Alexa shops for Amazon Prime items so you don't have to
The virtual assistant could already re-order items, now it can search for new ones.
Amazon's new Dash buttons restock Nerf, Play-Doh and more
The online retailer added 50 new options for ordering by connected button.
Best Buy hopes to offer in-home tech advice
And you won't have to buy something when it visits.
Microsoft brings mobile payments to your Windows 10 phone
The new Wallet app brings Windows 10 Mobile up to par with Apple Pay and Android Pay.
Facebook knows when you visit a store because of its ads
The social network wants retailers to know if their online ads create in-store sales.
Swarm brings back Foursquare's real-world perks
Checking in at the right places could give you discounts and prizes.