News
AimBrain steps up fight against spoof attacks by combining audio, lip sync and facial authentication for new module
April 2018 by Marc Jacob
AimBrain has raised the bar in user authentication by introducing optional audio and
lip synchronisation into its facial authentication module to create
AimFace//LipSync. Designed to prove liveliness and counter even the most
sophisticated spoofing technologies, AimFace//LipSync provides AimBrain customers
with stronger user authentication by combining facial recognition with a spoken
challenge and lip movement analysis.
Traditionally, defences against facial biometric fraud – that the user is genuine
and not a photo, video or computer-generated simulation – have been to train
algorithms to process images at low levels, searching for fraud signals such as
chromatic anomalies, textural differences, Moiré patterns or screen exposures. This
low-level processing has, however, made the algorithms sensitive to subtle changes
in camera, projection means and external environments, resulting in high accuracy
but only within the limited parameters in which they were trained.
AimBrain is first to market with this unique combination of visual and audio
syncing, which can be used across any industry in place of any process that uses
passwords or two factor authentication. An enterprise’s user or customer
authenticate themselves by saying a randomised number to camera when prompted,
whereupon the algorithm behind AimBrain’s new feature (AimFace//LipSync) assesses
three components:
1. Facial recognition: Does the face match the template?
2. Liveliness detection: Do the lips move in response to the voice challenge?
3. Anti-spoofing technology: Is the sound synchronised to the lip movement?
