They totally avoided the obvious "light amplification but with an IR-pass filter in front of the photocathode and/or a photocathode that is particularly IR-sens

They totally avoided the obvious "light amplification but with an IR-pass filter in front of the photocathode and/or a photocathode that is particularly IR-sensitive". I say obvious because I'm convinced these have been in production for decades. The things the security apparatus considers secure is laughable and a sign that they could be easily fall behind.