Why not use the Beijing-Tianjin-Hebei Interconnection Card in Beijing?

The Beijing-Tianjin-Hebei Interconnection Card, namely the Beijing-Tianjin-Hebei Traffic Co-branded Card, is a traffic card entity card mutually recognized by Beijing, Tianjin and Hebei. It has the basic functions of the national traffic card, and can be used in all public transportation fields supporting the application of the national traffic card in Beijing, Tianjin and Hebei provinces and cities.

This card is a combined transportation card, which can be used in Beijing, Tianjin and Hebei.

As for why Beijing doesn't use its real name, it may be because the card is a Beijing-Tianjin-Hebei interconnection card, and its purpose is to realize the interconnection of Beijing-Tianjin-Hebei traffic, so the real name registration system can better manage and maintain the use of the card.

I suggest you consult the official customer service for more information.