Whenever Ty N. Tremblay went to a supermarket, he noticed a problem: An elderly and disabled shopper seated in a motorized cart could only collect what would fill a small basket on the cart or would have to rely on someone else to follow with a large shopping carriage.

The solution? The Autonomous Shopping Cart, a robotic shopping carriage created by Mr. Tremblay and other Worcester Polytechnic Institute students that would follow any shopper through the aisles of a store.

“That way the elderly don't have to push a shopping cart, the handicapped don't have to get in (a cart),” said Mr. Tremblay, or your kid doesn't push it into your ankles.

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