Approximately this frequency band:

https://image.nostr.build/f978a0c51456b760b2d6b499b91674b54c83a16a357f70b6ca608d89226351cd.jpg

Face to Face: Why NIR Facial Recognition Systems Are the Most Secure | Radiant Vision Systems
https://www.radiantvisionsystems.com/blog/face-face-why-nir-facial-recognition-systems-are-most-secure

Maybe something like:

FREEMASCOT Professional OD 8+ 190nm-450nm/800nm-1100nm Wavelength Laser Safety Glasses for Typical 405nm, 445nm, 808nm, 980nm, 1064nm, 1080nm Laser Light
https://amzn.eu/d/cPfBi2r