[taco_john]

Hey man, Facebook's gotta put that In-q-tel capital to work!/s

But on a more serious note, isn't shining IR directly into your eyes from such close distances hazardous?

[antimatter15]

I'm sure the amount of IR light involved is far less than the exposure you get from walking outside on a nice sunny day.

[atmosx]

No idea, could be, could be not. Without any data, making assertions about things we don't understand is dangerous ;-)