A group of fourth-graders in Jiaxing, China, successfully hacked the facial recognition locks of Hive Box smart lockers, which are used for package deliveries. 

During a demonstration for a local TV program, the children revealed that the lockers could be opened using just a printed photo of the intended recipient's face. 

The discovery raised security concerns as it exposed the lockers' contents to potential theft. The show's host confirmed the vulnerability by replicating the hack with a high success rate, only failing when the photo was not held steadily.

In response, Hive Box announced that it would suspend the beta testing of the facial recognition feature. 

The incident sparked discussions about the security of facial recognition technology, particularly its implementation in consumer products.