If you want to get into patents and theft, spread spectrum radio..The idea was patented by Hedi Lamarr, to solve the problem of remote control of torpeodos.. She figured out a way to use radio, and rapidly changing the frequency, but finding a buyer of this idea, no one, it eventually lapsed, and years later was "re-discovered" and now we have blutooth, which uses spread spectrum radio, and a narrow "junk" band of radio that was basically useless...
Apple then grabbed this idea, "airdrop" this is just a fancy blutooth application, that uses a GUI to send and receive data, under the guise of being safe... But the rub is, airdrop is not a safe technology.. Apple use the idea of spread spectrum radio in a certain way, unwilling to share so that Android's system cannot directly interface with airdrop...But blutooth to blutooth works, but not always, for example Apple Pro Max, 2023, cannot send from the phone to the 2006 Mac Pro via airdrop, Apple security paranoia prevents this, but a 2022 Sammy A23 can send data to the 2006 Mac Pro via blutooth...
For me this is a good thing, for Apple egg on the face, Apple to Apple=no. Samsung to Apple=Yes.. which makes no sense, but it does to a paranoid company scared of being scammed, yet publishes open beta of almost all the code it has..Only pro apps are not open beta.. But the operating system is...Which is valuable intellectual Property IP...No doubt patented at some point.. So if IP is patented, why publish open beta??