That is the thing. Not using the smartphone has a point when it propose better ergonomic. Having to carry and get another device out of your pocket is not bette

That is the thing. Not using the smartphone has a point when it propose better ergonomic. Having to carry and get another device out of your pocket is not better ergonomic. It would make sense not being just a smartphone app if the device was wearable or could be used hand free, it is not.