I just got an Echo Plus at Christmas. So far it's playing music, telling me jokes, and telling me I'm pretty...but I've ordered some electrical outlet adaptors so I can turn lights on/off with voice commands, and I'm researching getting a thermostat so I can control my home's heat/AC as well.
I'm not going to get door locks that work with it until I know a great deal more about the security of the device.
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~MissChess