其实可以和厂家合作，直接内嵌进去就可以了，省了硬件的钱。

应该直接在手机上开发一个app，就搞定了。没有手机的可以送一个，或者补贴买个新的。这样也不用为以后更新硬件发愁。

手机一般常用的都支持吧。本地，肯定是美帝的gps优先。

What’s the Difference Between GPS and GNSS?
https://inertialsense.com/difference-between-gps-and-gnss/
GPS, traditionally, refers to the North American global positioning system, or satellite positioning system. This is how we can access locations. If there is any interference with the signal, it affects the location and information sent.

GNSS is a term that refers to the International Multi-Constellation Satellite System. This means that there is now access to more than just the GPS satellite, but other information that bases the data on more than just satellites.

Other Global Navigation Satellite Systems (GNSS)
https://www.gps.gov/systems/gnss/
Global navigation satellite system (GNSS) is a general term describing any satellite constellation that provides positioning, navigation, and timing (PNT) services on a global or regional basis

或者半实时传递道服务器就好了，然后所有处理放在服务器上。

其实就处理能力，最便宜的手机都绰绰有余了。现在的处理器都是超级强大。

至于忘了带，可以给车配一个免费的做备用，一直放在车上。