1. A method comprising: detecting biometric data representing different types of waves using at least two electrodes configured to be connected to a user; computing, using a hardware processor, features of the biometric data over a plurality of sampling periods; forming a cascading buffer based on the plurality of sampling periods from the computed features of the biometric data; dynamically monitoring shifting baselines of the computed features over the plurality of sampling periods in the cascading buffer; and identifying a change in the state of the user based on shifting baselines in the cascading buffer.