The clicker-type computers that rely on a human input don't need anywhere near the level of precision of hardware interrupts. A software-polled button will be just fine. But even if you did need the interrupts' precision, you can do it on any cheap wireless-enabled microcontroller and then transmit to an app on an unmodified off-the-shelf phone.

This is bullshit and designed to make their devices more advanced that the outdated junk they really are. I also have doubts they work, because if they did it would be in their best interest to keep quiet and not encourage casinos to deploy countermeasures.