Walmart just added a mysterious device to shopping carts, and what people think it does is raising major privacy concerns

Shoppers across the U.S. have noticed something new and unexpected on their Walmart shopping carts: a small, box-shaped device attached underneath the frame that many people say they’ve never seen before. Videos showing the gadget have gone viral on TikTok, one clip alone has earned over a million views, and sparked a wave of speculation about why it’s there and what it’s doing.

What the Device Actually Is

Despite rumors that the box might be “tracking everything you put in your cart,” the device isn’t scanning or spying on shoppers’ purchases. According to reporting on the phenomenon, the unit is a MOKOSmart LW008-MTP Small LoRaWAN GPS tracker — a type of gadget that can use GPS, Bluetooth, and Wi-Fi signals to pinpoint where a cart is in real time.

That means it can track the location of the cart itself, but it doesn’t read receipts, barcode data, or record the specific products you choose. At least, there’s no evidence right now that it’s doing that.

Why Some People Are Concerned

The device has stirred anxiety and privacy complaints online, especially from shoppers who worry that big retailers are collecting more data than they disclose:

• Confusion over its purpose — Some people think it could link cart movements to shopping habits or payment data, even though the tracker by design isn’t built to scan items.
• Fear of surveillance, In an era where apps and digital loyalty programs already collect a lot of personal data, the idea of a tracker on a physical cart feels invasive to some customers.
• Misinformation spreading — Social-media speculation has ranged from the device locking cart wheels to full-on “big brother is watching” scenarios — most of which aren’t supported by any official explanation.

So, Why Is Walmart Doing This?

The company hasn’t issued a public statement explaining the rollout, but experts point to a few possible reasons:

• Asset recovery — Shopping carts are expensive to replace, and millions are lost or stolen every year. GPS tracking could help stores find and bring lost carts back.
• Inventory and logistics — Tracking cart movement could help Walmart better understand patterns inside the store or keep more accurate fleet counts.
• Pilot technology — Retailers have been experimenting with all kinds of “smart” cart tech in recent years. Some systems can do everything from help you locate products to automatically checkout, though that’s not what these little boxes are doing right now.

The Bottom Line

Right now, the device attached to Walmart carts appears to be a location tracker used for cart management, not a tool for secretly monitoring what you buy. But the lack of clear communication from the company has left shoppers speculating and, in some cases, worrying about privacy implications.