Can Anyone Recommend A Access Control Fingerprint Reader With Sapphire Glass Scanner?

I have a client mention that he needs a biofingerprint reader that can "Resistant to liquids and especially glue." He mention as long as if the scanner glass is made by Sapphire glass, it would works. Does anyone has experience or recommendation?

This one from Vardi uses a sapphire crystal, no experience with them though. Perhaps someone else can vouch for the company in general.

Hi, we use the Virdi Biometrics from Union Community based in South Korea. The scanners are sapphire crystal.

Extremely durable.