Interesting to know that the concept involved, as it applies to cues, goes back to at least 1872, if not further.
An 1872 patent: https://www.google.com/patents/US132054
A 1900 patent: https://patents.google.com/patent/US672646A/en
An 1872 patent: https://www.google.com/patents/US132054
A 1900 patent: https://patents.google.com/patent/US672646A/en