The use of biometric data in an employment context is increasingly popular and seems to become a "quick-fix" modern security or fraud prevention solution. The increased use of biometric data for personal use (e.g. for the use of smartphone functions) seems to have increased the perceived acceptance of the use of biometric data. Data controllers should be aware however that the processing of biometric data may expose them to significant risks in case of data breach. This blogpost illustrates this with recent examples of case law and provides practical recommendations for employers-data controllers.