A series of thefts involving the use of ultra-realistic silicone face masks in China has ignited a debate about the legality of these widely available products.

In March of this year, four homes in Shanghai were broken into, and over 100,000 yuan ($13,760) in valuables were stolen. When the police identified the main suspect, they discovered that the 40-year-old man had a silicone mask that he had used to disguise himself as an elderly man when committing the crimes. Last month, police investigating a series of burglaries in Jiangsu Province identified a man who disguised himself as an electrical worker using a realistic mask in order to minimize the risk of being identified. These are only two examples of a growing trend in China that experts warn could lead to a crime spree unless the sale of realistic silicone masks is regulated.