I have a 5 year old google home mini that as long as youre connected to the same wifi network, it will allow anyone to play spotify through it. My brand new alexa dots (three of them) will not work with more than one spotofy account. I can link one spotkfy account and the speakers come up on the devices list in the spotify app but when i link another amazon account it just ignores it. Google doesnt even need apps to be linked, it just plays through anyones phone as long as their connected to our home wifi! Not at all impressed, I should have sticked with google.