Long before computers and the internet, police officers conducting a traffic stop would tap on the stopped car's tail light lens to leave a fingerprint: proof if necessary that they'd stopped the car.

Now you know the origin of the term "digital signature".

what, diseases don't respect national borders?

Rats, already have Mt. Athos confirmed in FT8; thought this would be a new one in that mode...

I need them in FT8.

nice to see you here, Andy!