Select the device to protect the laptop

Good day

Tell me what device apolished or knows to monitor the status of laptop? Am mostly interested in the hardware and not the app. The purpose of the protection of laptops while moving from theft.
What devices can be used for this?
Examples found personally: 1 and 2

Thank you in advance for your attention
October 8th 19 at 01:41
2 answers
October 8th 19 at 01:43
Is to move away from the laptop, the cat lies on him. Try to take the laptop or to drive away the cat will yell so that the thief will be caught red-handed.
October 8th 19 at 01:45
View to the side preyproject.com/
I apologize, inattentively read a question. However, reviews like my good saw. - retha13 commented on October 8th 19 at 01:48

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