Comment by spicyjpeg
12 hours ago
The FeliCa NFC standard made its way into more than just transit cards in Japan. One notable user is the Amusement IC network, which lets you quickly log into arcade games across multiple manufacturers using a single card. Some implementations (Konami's e-amusement most notably) even go as far as to allow any FeliCa-compatible card or device to be linked to a profile, including transit cards, phones (with no app required!) and certain models of Sony Bluetooth earbuds which use FeliCa for quick pairing.
> Some implementations even go as far as to allow any FeliCa-compatible card or device to be linked to a profile
This is also put in use in many karaoke joints to save a list of your favorite songs/song history.