Just like everything else, helmets are getting smarter all the time. Take the KRACESS KRS-S1 for instance: it is a smart bike helmet with a 1080p 60fps sports camera. It supports up to 128GB TF cards. This helmet has Bluetooth 5.0 connectivity. It has security lights to keep you visible at night.
The KRS-S1 has 3 light modes. It comes with a remote control for controlling the direction of the turn signal. It is Siri friendly too. You can find out more about it here.