Deregister echo dot?

[Mills23]

I have my mother in laws echo dot registered to my amazon account, if I deregister her device will she still be able to us it?  Will we still be able to drop in on it?

[jwlv]

Every Echo device has to be registered to an Amazon account. If you de-register a device, it cannot be used unless it is registered in another account. If it's registered to a new account, your settings or any previous settings for that Echo device will not be retained.