China's Ministry of State Security has warned of foreign attempts to collect sensitive biometric data via crypto schemes. The ministry warned that foreign agents are illegally harvesting iris scans and facial data, risking personal privacy and national security.

The advisory noted recent cases in which foreign intelligence services exploited biometric technologies to spy on individuals within China. Cryptocurrencies incentivised people worldwide to submit iris scans, which were sent overseas.

Although no specific companies were named, the description resembled the approach of the crypto firm World, formerly known as Worldcoin.

Biometric identification methods have proliferated across many sectors due to their accuracy and convenience. However, the ministry stressed the vulnerability of such systems to data breaches and misuse.

Iris patterns, unique and challenging to replicate, are prized by malicious actors.

Citizens are urged to remain cautious, carefully review privacy policies, and question how their biometric information is handled.