A simple way to add a layer of security to virtually any hard tonneau cover. Just buy a wireless door/window alarm and some 3M auto emblem tape (links below), and you’ll sleep a bit better at night if you keep anything valuable in the bed of your truck.
Alarm GE Personal Security Window and... https://www.amazon.com/dp/B00032CIJQ?...
Tape 3M Exterior Attachment Tape,... https://www.amazon.com/dp/B00JR4D7AA?...