You can pair your Nintendo Switch Joy-Cons controllers with a PC for use with games.
Being Bluetooth-based, the Joy-Cons had no problem getting paired with a PC. The only problem is, each of them can only be paired separately, acting as two controllers. As of present time, there's no way for the PC to recognise both of them as a single controller.
The Nintendo Switch obviously has this ability when using the console in handheld mode, or attaching both Joy-Cons to the grip. Theoretically, Joy-Cons should also work with Android phones.