A new preprint on arXiv, WaveSpec, addresses multispectral iris presentation attack detection (PAD). The abstract notes that observing the same iris across multiple near-infrared wavelengths is beneficial, but existing methods tend to use wavelength information mainly for conditioning or fusion.
The proposed approach, WaveSpec, is described as a wavelength-conditioned spectral coherence adaptation method. Rather than treating wavelength as a simple input or fusion cue, it appears to adapt spectral coherence across wavelengths to better distinguish live irises from presentation attacks.
Because the source is only an abstract, specific technical details and experimental results are not yet available. The preprint is listed as arXiv:2610.27608v1.