Lock for hard tonneau cover to tail gate

I have a new 2019 Ridgeline RTL-E with a tonneau cover that I want to get a lock for so that I can lock it to the tailgate. Am requesting recommendations please
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I just want to understand how secure the bed would be without the addition of a 3rd party locking mechanism.
EDIT: Oops...I just realized that the tailgate itself doesn't lock! Well that changes things... I guess I will look into the Pop & Lock power lock...