"smartphones, tablets, and computers"
All of which are useless without an internet connection. Presumably Samsung have the serial nos etc. I wonder if they can detect the devices going online.
Same with my TV, whose serial number is registered with LG. Anyone nicks my TV, they'll have to use it in dumb mode.
Yes, there's always going to be workarounds for the odd case. But a truckload ?
One thing the IoT is going to bring, is a lot harder to shift consumer electronics.