https://www.sciencedirect.com/science/article/abs/pii/S0925231215004725
An important study on ERP brain biometrics was being featured in news by the U.S. National Science Foundation in 2016, in the article "Neuroscience research into dyslexia leads to 'brainprints'.
"Wired UK" would also feature it in the news article entitled "Your 'brainprint' can identify you with 100% accuracy".
Same for "Futura Sciences" in the article "Biométrie : des « empreintes cérébrales » pour nous identifier".
The study was entitled "CEREBRE: A Novel Method for Very High Accuracy Event-Related Potential Biometric Identification".
Ruiz-Blondet, Maria V., et al. “CEREBRE: A Novel Method for Very High Accuracy Event-Related Potential Biometric Identification.” IEEE Transactions on Information Forensics and Security, vol. 11, no. 7, 1 July 2016, pp. 1618–1629, https://doi.org/10.1109/TIFS.2016.2543524.
https://tspace.library.utoronto.ca/handle/1807/108661
The described acquisition protocol uses auditory stimulation to elicit a special class of brainwaves known as steady-state Auditory Evoked Potentials (AEP).
This is an EEG-based biometric system using auditory stimulation. It is used to obtain the brain biometric (brainprint) by sound presentation. It belongs to the category of ERP (evoked response potential) brain biometrics.
A sound stimulus, shown in Figure 2.3 on the left, having a 40 Hz repetition rate, evokes an auditory brain response shown on the right, which is characterized by a 40 Hz peak.
As mentioned in the abstract, auditory stimulation is adopted "to elicit a special class of brainwaves known as steady-state Auditory Evoked Potentials (AEP)".