How about smart glasses? Is it useful?

Sure, it works well. It can not only take photos, video, call and navigate, but also be used at work. For example, some customs and entry-exit personnel use glasses with camera function to register entry-exit personnel. Record the process of police law enforcement from the first perspective, which is convenient for obtaining evidence. Doctors can broadcast the operation live and ask experts for remote guidance. Students can help each other transmit answers in real time during the exam ... ahem, please ignore the last one automatically. But at this stage, the most suitable application scenarios for these smart glasses are still many in the industry. For example, Google Glass, which first wanted to cut into daily life, worked hard for a lot of time and showed a lot of eyeballs, and then gave itself up to the industrial direction. The biggest order for Realmax glasses also comes from industrial applications. Lenovo glasses ... Lenovo glasses can be blank, indicating that sales have said a lot, but things have not been seen yet.