Selfie stick in 1969 Czechoslovak science fiction movie

I Killed Einstein, Gentlemen is a 1969 Czechoslovak science fiction comedy film directed by OldATMich Lipski. Wikipedia says "it became known for the scene showing the first selfie stick."

Here's the full movie. The opening seconds probably raised some eyebrows at the time:https://www.youtube.com/watch?v=8QFboY7MKx4