As long as I'm not able to log in on my smartphone AND laptop at the same time all of this whatsapp api will be kind of useless in my opinion. I want to chat wi

As long as I'm not able to log in on my smartphone AND laptop at the same time all of this whatsapp api will be kind of useless in my opinion. I want to chat with whatsapp on my computer,that's sure,but I don't want to re-register every time I switch from phone to computer or vice versa.